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Patents for National Drafting Tool Co.
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
622,128Mar. 28, 1899W.C. DayCombined drafting and measuring toolcompasses
639,696Dec. 19, 1899W.C. DayDevice for handling barrelsbarrel making machines
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