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Claude Leonard 1900 - 1990

Claude Leonard was born on May 14, 1900, and died at age 90 years old on September 21, 1990. Family, friend, or fan, this family history biography is for you to remember Claude Leonard.

Claude Leonard
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May 14, 1900
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September 21, 1990
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Male
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Updated: November 9, 2011
Biography ID: 76942211 What's this
Claude Leonard Claude Leonard (1900 - 1990)
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Claude Leonard's History: 1900 - 1990

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  • 05/14
    1900

    Birthday

    May 14, 1900
    Birthdate
    Unknown
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  • 09/21
    1990

    Death

    September 21, 1990
    Death date
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    Cause of death
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  • Did you know?
    Claude Leonard lived 17 years longer than the average family member when died at the age of 90.
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In 1900, in the year that Claude Leonard was born, the German physicist Max Planck formulated an energy theory, postulating the existence of "quanta," which lays the groundwork for the quantum theory of modern physics. In December, he introduced a paper on the Planck postulate which stated that E=hv - the energy of a photon is proportional to its frequency times a constant. Planck won a Nobel Prize in 1918 for his work in theoretical Physics.
Did you know?
In 1921, he was 21 years old when the silent film The Sheik, directed by George Melford and starring Rudolph Valentino and Agnes Ayres (also featuring Adolphe Menjou) debuted on October 21st. Critics weren't enthusiastic but the public loved it - in the first few weeks 125,000 people had seen the movie - and it eventually exceeded $1 million in ticket sales. And Rudolph Valentino, an Italian American, became the heartthrob of a female generation.
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Claude Leonard's Family Tree & Friends

Claude Leonard's Family Tree

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Claude Leonard May 14, 1900 - Sep 21, 1990
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Other Biographies

Other Claude Leonard Biographies

Leonard, Claude (Jul 22, 1936 - Dec 7, 1996) Leonard, Claude (Dec 8, 1924 - Aug 24, 1984) Leonard, Claude (Jul 28, 1916 - Nov 1978) Leonard, Claude (Nov 20, 1911 - Feb 1971) Leonard, Claude (Jul 4, 1880 - Oct 1962) Leonard, Claude (Apr 18, 1896 - Mar 1987) Leonard, Claude (Oct 6, 1898 - Nov 1978) Leonard, Claude (Jul 22, 1890 - Aug 1970) Leonard, Claude (Oct 2, 1889 - Sep 1967) Leonard, Claude (Jan 31, 1920 - Jan 2, 1999)
Leonard, Claude (Mar 4, 1916 - Oct 3, 1989) Leonard, Claude (Feb 12, 1901 - May 1970) Leonard, Claude (Aug 21, 1899 - Oct 1964) Leonard, Claude (Sep 14, 1915 - Aug 12, 2003) Leonard, Claude (Jun 10, 1902 - Jan 1962) Leonard, Claude (Jul 22, 1905 - Sep 1987) Leonard, Claude (Mar 23, 1899 - Jan 1987) Leonard, Claude (Mar 7, 1917 - Nov 1956) Leonard, Claude (Jun 4, 1896 - Sep 1976) Leonard, Claude (Apr 30, 1889 - Oct 1969)

Other Leonard Family Biographies

Leonard, William (Born Dec 8, 1924) Leonard, Grace F. (Born Jun 5, 1896) Arkel, Leendert (Born Oct 23, 1855) Leonard, Carl (Born Apr 26, 1925) Leonard, Mrs. David F. (Born 1876) Leonard, Mary Leonard, James Leonard, George (Sep 12, 1915 - Apr 1985) Leonard, Dorothy (Dec 6, 1903 - Feb 21, 1994) Leonard, Elsie (Nov 10, 1880 - May 1975)
Leonard, Shirley (Died Sep 1960) Leonard, Harold (Mar 25, 1911 - Oct 15, 1996) Leonard, Mason (Nov 18, 2005 - Dec 9, 2005) Leonard, Arthur (Aug 7, 1879 - Sep 1969) Leonard, Nathaniel (Feb 23, 1909 - May 8, 1995) Leonard, Cecile (May 2, 1915 - Jan 17, 1998) Leonard, Macie (May 4, 2007 - Aug 31, 2007) Leonard, Lloyd (Sep 3, 1908 - May 1984) Leonard, Allan (Jul 4, 1914 - Aug 1985) Leonard, Doris (May 9, 1913 - Feb 1993)
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