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Addo Janssen 1900 - 1977

Addo Janssen of Allison, Butler County, Iowa was born on August 11, 1900, and died at age 77 years old in August 1977.

Addo Janssen
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Allison, Butler County, Iowa 50602
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August 11, 1900
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August 1977
Death
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Updated: November 8, 2011
Biography ID: 73224987 What's this
Addo Janssen Addo Janssen (1900 - 1977)
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Addo Janssen's History: 1900 - 1977

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  • 08/11
    1900

    Birthday

    August 11, 1900
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    Unknown
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  • 08/dd
    1977

    Death

    August 1977
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  • Did you know?
    Addo Janssen lived 1 year longer than the average family member when died at the age of 76.
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In 1900, in the year that Addo Janssen 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 1943, this person was 43 years old when on September 3rd, the Armistice of Cassibile was signed in Sicily. Under the terms of the Armistice, Italy surrendered to the Allied Powers. After the Armistice was made public on September 8th, Germany attacked and occupied Italy. It took 20 months of fighting for the Allies to reach the northern borders of Italy.
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Addo Janssen's Family Tree

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Addo Janssen Aug 11, 1900 - Aug 1977
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Other Biographies

Other Janssen Family Biographies

Janssen, Barbara (Apr 24, 1922 - Aug 16, 1993) Janssen, Kaitlin (May 4, 1983 - Dec 4, 2008) Janssen, Marie (Aug 6, 1911 - Oct 6, 2005) Janssen, Frieda (Apr 5, 1901 - Nov 15, 1971) Janssen, Wilhelmine (Nov 28, 1881 - Mar 1970) Janssen, Anna (Dec 3, 1904 - Feb 1973) Janssen, Sara (Nov 24, 1883 - Jan 1973) Janssen, Mary (Apr 19, 1897 - Jan 1987) Janssen, William (Feb 1, 1901 - Nov 1986) Janssen, Karl (Mar 8, 1904 - Aug 1981)
Janssen, Dolores (Apr 7, 1920 - Jan 20, 2009) Janssen, Marguerite (Sep 10, 1906 - May 28, 1995) Janssen, Richard (Nov 20, 1960 - Aug 28, 2006) Janssen, Esther (Dec 27, 1932 - Apr 29, 1999) Janssen, Marie (Oct 22, 1907 - Dec 15, 1993) Janssen, Lea (Jul 8, 1918 - Apr 28, 1989) Janssen, John (Jun 17, 1913 - Jul 1973) Janssen, Lorraine (Jun 6, 1916 - Apr 11, 2009) Janssen, Joseph (May 7, 1917 - Dec 1964) Janssen, Melodie (Oct 17, 1942 - Nov 29, 2009)
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