* 1973 – Launch of Pioneer 11 spacecraft.

* 1973 – The American League of Major League Baseball begins using the designated hitter.

* 1973 – Donnie Edwards, American football player

* 1973 – Randall Godfrey, American football player

* 1973 – Joe Machine, English artist, poet and writer

* 1973 – Rie Miyazawa, Japanese actress and model

* 1973 – Sun Wen, Chinese footballer

* 1973 – J. Scott Campbell, American writer and illustrator

* 1973 – Claudia Jordan, American model

* 1973 – Christina Moore, American actress

* 1973 – Antonio Osuna, Mexican baseball player

* 1973 – Watergate Scandal: U. S. President Richard Nixon announces that top White House aides H. R.

* 1948 – Alexander Onassis, American Greek socialite, son of Greek shipping magnate Aristotle Onassis ( d. 1973 )

* 1973 – Jeff Timmons, American singer and producer ( 98 Degrees )

* 1973 – Kinna McInroe, American actress

* 1908 – Lyndon B. Johnson, American politician, 36th President of the United States ( d. 1973 )

* 1973 – Jazz, American wrestler

* 1973 – Cory Bowles, Canadian actor and choreographer

* 1973 – Danny Coyne, Welsh footballer

* 1973 – Dietmar Hamann, German footballer

* 1973 – Burak Kut, Turkish singer-songwriter

* 1973 – Johan Norberg, Swedish author

* 1973 – Vera Farmiga, American actress

* 1973 – Monica Goodling, American lawyer

* 1973 – Max Kellerman, American sportscaster

At that time, the ENIAC was considered to be the first computer in the modern sense, but in 1973 a U. S. District Court invalidated the ENIAC patent and concluded that the ENIAC inventors had derived the subject matter of the electronic digital computer from Atanasoff ( see Patent dispute ).

The case was legally resolved on October 19, 1973 when U. S. District Judge Earl R. Larson held the ENIAC patent invalid, ruling that the ENIAC derived many basic ideas from the Atanasoff – Berry Computer.

Some historians have cited the U. S. intervention and bombing campaign ( spanning 1965 – 1973 ) as a significant factor leading to increased support of the Khmer Rouge among the Cambodian peasantry.

" When Congress, in the summer of 1973, legislated an end to U. S. military action in, over, or off the shores of Indochina, the only U. S. military activity then going on was air support of a friendly Cambodian government and army desperately defending their country against a North Vietnamese and Khmer Rouge onslaught ... What destabilized Cambodia was North Vietnam's occupation of chunks of Cambodian territory from 1965 onwards for use as military bases from which to launch attacks on U. S. and South Vietnamese forces in South Vietnam.

The cases were consolidated, and in 1973 the U. S. Court of Appeals for the District of Columbia ruled that the EPA had acted properly in banning DDT.

The lira fell steadily, from 560 lira to the U. S. dollar in 1973 to 1, 400 lira in 1982.

* 1973 – In handing down the decision in Miller v. California 413 US 15, the Supreme Court of the United States establishes the Miller Test for obscenity in U. S. law.

In December 1973 he was granted a U. S. Patent for a table he designed.

It also severed ties with Israel during the Yom Kippur War in 1973, but kept supporting the U. S. on the Vietnam War.

This version remained the primary infantry rifle of U. S. forces in South Vietnam until the end of the war in 1973, and remained with all U. S. military ground forces after it had replaced the M14 service rifle in 1970 in CONUS, Europe ( Germany ), and South Korea ; when it was supplemented by the M16A2.

* 1973 – U. S. President Richard Nixon signs the Trans-Alaska Pipeline Authorization Act into law, authorizing the construction of the Alaska Pipeline.

* 1973 – Watergate scandal: In Orlando, Florida, U. S. President Richard Nixon tells 400 Associated Press managing editors " I am not a crook.

* 1973 – " Saturday Night Massacre ": President Richard Nixon fires U. S. Attorney General Elliot Richardson and Deputy Attorney General William Ruckelshaus after they refuse to fire Watergate special prosecutor Archibald Cox, who is finally fired by Robert Bork.

In 1973, he was named Chief of the Narcotics Unit and became executive U. S. attorney.

Formal efforts backed by the U. S. Fish and Wildlife Service began to save the red wolf from extinction in 1973 when a captive breeding program was established at the Point Defiance Zoological Gardens, Tacoma, Washington.

All these numbers had not been seen since the end of U. S. involvement in the Vietnam War in 1973.

* Text of Michigan V. Ohio, 410 U. S. 420, the 1973 United States Supreme Court decision resolving Michigan-Ohio boundary at Lake Erie.

American Motors ( AMC ) was so convinced "... that the rotary engine will play an important role as a powerplant for cars and trucks of the future ...", according to Chairman Roy D. Chapin Jr., that the smallest U. S. automaker signed an agreement in February 1973, after a year's negotiations, to build Wankels for both passenger cars and Jeeps, as well as the right to sell any rotary engines it produces to other companies.

at N. Y. U. and also for the Baltimore underground newspaper Harry and the New York Ace, before joining National Lampoon in 1973, where he served as managing editor among other roles and authored articles such as " Foreigners Around the World " and " How to Drive Fast on Drugs While Getting Your Wing-Wang Squeezed and Not Spill Your Drink.

Tests of the improved Pewee 2 design were cancelled in 1970 in favor of the lower-cost Nuclear Furnace ( NF-1 ), and the U. S. nuclear rocket program officially ended in spring of 1973.