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Patents for Jessie S. Blackmer
Patents 1 - 3 of 3
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
973,489Oct. 25, 1910F.E. FarleyDrill
1,045,200Nov. 26, 1912C.D. SeveranceBreast Drill Gearing
1,090,180Mar. 17, 1914F. Judge, F.O. WellsCalipering Gage for Screw Threads
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