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All Patents in class 235/85R
Patents 1 - 2 of 2
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PictureNumberDatePatenteeTitle
67,269Jul. 30, 1867F.J. CoffinImprovement in Slides for Rules, Scales and Tables
1,980,546Nov. 13, 1934E.S. Hineline, W.H. PetitPhotographic Camera
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