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All Patents in class 33/664
Patents 1 - 3 of 3
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PictureNumberDatePatenteeTitle
381,560Apr. 24, 1888J. KrumscheidMultiple Dividers
819,926May 08, 1906A. RobbinsSpacing and Dividing Instrument
1,428,582Sep. 12, 1922F.W. DietzDevice for Drwaing Parallel Lines
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