Hornig's 1945 patent (declassified and granted in 1976) for the switch that triggered the Trinity gadget: http://www.google.com/patents?id=dKB8AAAAEBAJ&dq=3,956,658 …
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Hornig's 1945 patent (declassified and granted in 1976) for the switch that triggered the Trinity gadget: http://www.google.com/patents?id=dKB8AAAAEBAJ&dq=3,956,658 …