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Patents for John F. Kopczynski
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,814,206Nov. 26, 1957J.F. KopczynskiUltra high speed bearingsmetalworking machine bearings
2,850,338Sep. 02, 1958J.F. KopczynskiHigh speed bearingmetalworking machine bearings
3,122,932Mar. 03, 1964J.F. KopczynskiMachine toolgrinding attachments
3,625,263Dec. 07, 1971J.F. KopczynskiRoll bending machine and method
3,672,411Jun. 27, 1972J.F. KopczynskiStraightening machine for elongated workpieces
3,783,910Jan. 08, 1974J.F. KopczynskiBending machine for straightening elongated workpieces
3,799,216Mar. 26, 1974J.F. KopczynskiStraightening machine for elongated workpieces
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