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.

Añadido al timeline:

Forensic Timeline

ByConnor Parks

7 sep 2018

650

fecha:

19 feb 1929 año

Ahora mismo

~ 96 years ago