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Patents for William H. Petit
Patents 16 - 17 of 17
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NumberDatePatenteeTitleType
2,034,441Mar. 17, 1936E.S. Hineline, W.H. PetitArt or Method of Accurately Photographing Upon Film Strips Having Nonsensitized Endscameras
2,123,151Jul. 05, 1938E.S. Hineline, W.H. PetitMethod of Photographically Recording Voting Machine Indicationscameras
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