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Patents for Frederick W. Hoefer
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
506,865Oct. 17, 1893D.C. Stover, F.W. Hoefer, E.A. Hoefer, A. HoeferSensitive drilldrill presses
542,694Jul. 16, 1895F.W. Hoefer, D.C. StoverSensitive drill pressdrill presses
542,695Jul. 16, 1895F.W. Hoefer, D.C. StoverVariable-speed sensitive drill pressdrill presses
729,864Jun. 02, 1903E.A. Hoefer, A.G. Hoefer, F.W. HoeferWire Gaging and Cutting Machinewire gauging and cutting machines
766,883Aug. 09, 1904E.A. Hoefer, A.G. Hoefer, F.W. HoeferDrilling Machinedrill presses
841,396Jan. 15, 1907F.W. HoeferMachine for Threading Pipespipe threading machines
1,164,813Dec. 21, 1915F.W. Hoefer, C.A. HoeferMultiple-spindle drill-headwood drilling and boring
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