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19 feb 1929 año - Phillip Gravelle

Descripción:

in the 1920s forensic ballistics was waiting at its inception. In 1929, using a comparison microscope adapted for the purpose by Calvin Goddard and his partner Phillip Gravelle used similar techniques to absolve the Chicago Police Department of participation in the St. Valentine's Day Massacre.

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Forensic Timeline

ByConnor Parks
7 sep 2018
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0
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fecha:

19 feb 1929 año
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~ 96 years ago
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