Patents - Inventor Surname "Marshall"
Marshall, James Keith 1935/04/30 -> D95463 - > 
Marshall, James Keith 1938/01/11 -> 2105337 - > 
Marshall, James Keith 1938/04/12 -> 2113864 - > 
Marshall, James Keith 1938/08/16 -> 2127091 - > 
Marshall, James Keith 1939/08/15 -> 2169907 - > 
Marshall, James Keith 1939/09/19 -> 2173720 - > 
6 Patents Listed