I think that they must be two different people, a Dr. Wilen would have used his title in the patents and Gilpatric given his penchant for slang terms would have called him "Doc" Wilen, but birth dates and places of residence would settle it. Wilen's place of residence for the "Fusil Americain" spring gun patent is Brooklyn, New York. At the time of the earlier 1937 patent for the dive mask or monoplane goggle both he and Kramarenko are resident in France at Alpes-Maritimes. He and Kramarenko are still there in December 1939 when they submit their ball valve snorkel patent shown here.
By May 1946 Wilen is back at Alpes-Maritimes when he lodges his spear pistol patent shown here at Saint-Etienne.
The flat rubber band drive system was also adopted by the Japanese for their timber and brass rollerguns using a twin guide rail system where a sliding carriage propelled a slim spear.
By May 1946 Wilen is back at Alpes-Maritimes when he lodges his spear pistol patent shown here at Saint-Etienne.
The flat rubber band drive system was also adopted by the Japanese for their timber and brass rollerguns using a twin guide rail system where a sliding carriage propelled a slim spear.
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