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feb 19, 1929 - Phillip Gravelle

Description:

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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Date:

feb 19, 1929
Now
~ 96 years ago
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