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Patents for John F. Oberlin
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
909,623Jan. 12, 1909E.J. LeesMicrometermicrometers
956,849May 03, 1910W.C. HafemeisterPortable electric drillhandheld power tools
1,104,736Jul. 21, 1914F. SchneiderGearinghandheld drills
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