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Harold Hopfner 1900 - 1986

Harold Hopfner of Worcester, Worcester County, MA was born on April 21, 1900, and died at age 86 years old in June 1986.

Harold Hopfner
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Worcester, Worcester County, MA 01605
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April 21, 1900
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June 1986
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Updated: October 3, 2011
Biography ID: 4866999 What's this
Harold Hopfner Harold Hopfner (1900 - 1986)
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Harold Hopfner's History: 1900 - 1986

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  • 04/21
    1900

    Birthday

    April 21, 1900
    Birthdate
    Unknown
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  • 06/dd
    1986

    Death

    June 1986
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  • Did you know?
    Harold Hopfner lived 11 years longer than the average family member when died at the age of 86.
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In 1900, in the year that Harold Hopfner 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 1929, he was 29 years old when American Samoa officially became a U.S. territory. Although a part of the United States since 1900, the Ratification Act of 1929 vested "all civil, judicial, and military powers in the President of the United States of America".
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Harold Hopfner's Family Tree & Friends

Harold Hopfner's Family Tree

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Harold Hopfner Apr 21, 1900 - Jun 1986
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Other Biographies

Other Hopfner Family Biographies

Hopfner, Mildred (Jul 18, 1922 - Oct 25, 2002) Hopfner, Martin (Apr 6, 1916 - Oct 11, 1972) Hopfner, Elmer (Nov 26, 1904 - May 31, 1988) Hopfner, Richard (Jun 22, 1936 - Sep 18, 2002) Hopfner, Lillian (Mar 3, 1908 - Jul 31, 2003) Hopfner, Clarence (Nov 26, 1902 - Feb 1970) Hopfner, Mary (Nov 8, 1902 - Nov 16, 1988) Hopfner, Raymond (Aug 1, 1913 - Apr 14, 2000) Hopfner, Walter (Nov 7, 1923 - Apr 1987) Hopfner, Isabel (Apr 3, 1904 - Jun 1983)
Hopfner, Robert (Jun 14, 1929 - Jan 1976) Hopfner, Alexander (Aug 14, 1903 - Jan 1960) Hopfner, Catherine (Nov 6, 1898 - May 1983) Hopfner, Leopold (Mar 28, 1908 - Oct 27, 1997) Hopfner, Mary (Mar 22, 1919 - Jun 10, 2005) Hopfner, Anna (Apr 12, 1910 - Apr 12, 2000) Hopfner, Phyllis (Oct 23, 1898 - Oct 1975) Hopfner, Josefa (Apr 27, 1932 - Feb 28, 2004) Hopfner, Mabel (Sep 25, 1897 - Aug 1990) Hopfner, Daniel (Nov 15, 1945 - Jan 9, 2003)
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