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Patent number:
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Patents for Oscar Wiener
Patents 1 - 2 of 2
Number
Date
Patentee
Title
Type
645,263
Mar. 13, 1900
W.L. Keuffel
Tape reel
tape measures
651,142
Jun. 05, 1900
W.L. Keuffel
Slide Rule
slide rules
Toggle print mode
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