* In 1922, Lee De Forest recorded DeWolf Hopper reciting the poem in DeForest's Phonofilm sound-on-film process.

Two years later, Robert von Lieben and Lee De Forest independently developed the amplifier tube, called the triode.

This distinction started around 1906 with the invention by Lee De Forest of the triode, which made electrical amplification of weak radio signals and audio signals possible with a non-mechanical device.

In August 1912, Lee De Forest, the inventor of the audion, had also observed oscillations in his amplifiers, but he didn't understand its significance until he read Armstrong's patents in 1914, which he promptly challenged.

Armstrong and De Forest fought a protracted legal battle over the rights to the " regenerative " oscillator circuit which has been called " the most complicated patent litigation in the history of radio ".

De Forest ultimately won before the Supreme Court in 1934 on technical grounds, but most sources regard Armstrong's claim as the stronger one.

Oscillator claims 1912 ; De Forest and Armstrong court case cf p. 45.

While De Forest's addition of a third element to the Audion ( the grid ) and the subsequent move to modulated ( voice ) radio is not disputed, De Forest did not put his device to work.

Armstrong later published a paper detailing how the Audion worked, something De Forest could not do.

De Forest did not understand the workings of his Audion.

In particular, the regenerative circuit, which Armstrong patented in 1914 as a " wireless receiving system ," was subsequently patented by Lee De Forest in 1916 ; De Forest then sold the rights to his patent to AT & T.

Between 1922 and 1934, Armstrong found himself embroiled in a patent war, between himself, RCA, and Westinghouse on one side, and De Forest and AT & T on the other.

Before the Supreme Court of the United States, De Forest was granted the regeneration patent in what is today widely regarded as a misunderstanding of the technical facts by the Supreme Court justices.

* 1930 – Roy De Forest, American painter ( d. 2007 )

In 1906, Lee De Forest of the U. S. added a control " grid " to the valve to create a vacuum tube RF detector called the Audion, leading Fleming to accuse him of copying his ideas.

Musical short films were made by Lee De Forest in 1923-24.

The first simple, two-pole magnetron was developed in 1920 by Albert Hull at General Electric's Research Laboratories ( Schenectady, New York ), as an outgrowth of his work on the magnetic control of vacuum tubes in an attempt to work around the patents held by Lee De Forest on electrostatic control.

The first three-element device ( mercury-vapor filled with a control grid ) was patented on March 4 1906 by the Austrian Robert von Lieben independent from that, on October 25 1906 Lee De Forest patented his two-element Audion.

Lee De Forest three-element (" Triode ") Audion tube from 1908, the precursor of the triode vacuum ( thermionic ) tube.

There was a lengthy lawsuit between von Lieben and De Forest.

However, it was Lee De Forest who is credited with inventing the triode tube in 1907 while continuing experiments to improve his original Audion tube, a crude forerunner of the triode.

Raimi turned down the offer, but De Laurentiis continued to be interested in the young filmmaker.

" I think the biggest black mark against our management to date is the Cukor situation and we can no longer be sentimental about it .... We are a business concern and not patrons of the arts ..." Cukor was relieved of his duties, but he continued to work with Leigh and De Havilland off the set.

When Bao De was recalled to the capital in 111, to serve as a minister of finance, Zhang continued his literary work at home in Xi ' e.

On that occasion the party won 48. 5 % of the vote, but, despite its absolute majority in the Italian Parliament, De Gasperi continued to govern at the head of a centrist coalition that included the Italian Workers ' Socialist Party ( PSLI-a 1947 break-away from the PSI ), the Liberals and the Republicans.

In 1649, the syndic of the Sorbonne, Nicolas Cornet, frustrated by the continued circulation of the Augustinus, drew up a list of five propositions from Augustinus and two propositions from De la fréquente Communion and asked the Sorbonne faculty to condemn the propositions.

De Moivre continued his studies of mathematics after visiting the Earl of Devonshire and seeing Newton ’ s recent book, Principia.

De Moivre continued studying the fields of probability and mathematics until his death in 1754 and several additional papers were published after his death.

Brzezinski continued to support engagement with Eastern European governments, while warning against De Gaulle's vision of a " Europe from the Atlantic to the Urals.

These efforts continued under Roland De Mecquenem until 1914, at the beginning of World War I. French work at Susa resumed after the war, led by De Mecquenem, continuing until World War II in 1940.

" De Forest's process continued to be used through 1927 in the United States for dozens of short Phonofilms ; in the UK it was employed a few years longer for both shorts and features by British Sound Film Productions, a subsidiary of British Talking Pictures, which purchased the primary Phonofilm assets.

The airline's rapid growth continued in 1986, and the airline greatly expanded its fleet, primarily with Boeing 757s purchased from Northwest Airlines after Northwest bought out Republic Airlines, as well as a number of De Havilland Canada Dash 8 aircraft for local service from Phoenix and Las Vegas.

De Gaulle's return to power was supposed to ensure Algeria's continued occupation and integration with the French Community, which had replaced the French Union and brought together France's colonies.

In the fifth round Trinidad continued in the offensive while De la Hoya attempted to remain on the outside corners of the ring, Trinidad's eye was swollen following a trade of punches.

Both boxers continued this pattern in the final round, with De la Hoya trying to slow down the offense while displaying signs of exhaustion, as Trinidad continued to possess control.

Thence, however, he continued to govern his diocese, while he found leisure for the preparation of two of the most important of his contributions to dogmatic and polemical theology: the De synodis or De fide Orientalium, an epistle addressed in 358 to the Semi-Arian bishops in Gaul, Germany and Britain, expounding the true views ( sometimes veiled in ambiguous words ) of the Eastern bishops on the Nicene controversy ; and the De trinitate libri XII, composed in 359 and 360, in which, for the first time, a successful attempt was made to express in Latin the theological subtleties elaborated in the original Greek.

On 18 July, William received a letter from Charles, very moderate in tone, in which the king claimed that the entire campaign was merely directed against the States regime and that the only obstacle to peace was the continued influence of the faction of De Witt.

De Havilland continued acting on film until the late 1970s, afterward continuing her career on television until the late 1980s, highlighted by her winning a Golden Globe and earning a Emmy Award nomination for her performance as the Dowager Empress Maria in the 1986 miniseries Anastasia: The Mystery of Anna.

De Havilland's relationship with Fontaine continued to deteriorate after the two incidents.

After World War II De Jong continued to serve in the Royal Netherlands Navy, commanding two frigates and serving as aide-de-camp to Queen Juliana.

Frank Sinatra continued his legendary career, and was joined by Mario Lanza, Perry Como, Dean Martin ( Dino Crocetti ), Tony Bennett ( Benedetto ), Frankie Laine ( Francesco LoVecchio ), Vic Damone ( Vito Farinola ), Don Cornell ( Luigi Varlaro ), Bobby Darin ( Walden Cassotto ), Johnny Desmond ( Giovanni De Simone ), Bobby Rydell ( Ridarelli ), Julius La Rosa, Connie Francis ( Concetta Franconero ), Joanie James ( Giovanna Babbo ), Madonna and a host of others.

Dutch newspapers continued in the area-mainly in De Pere by Catholic clergymen-were published up until World War I.