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Patents for Harry E. Keithley
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,699,882Oct. 24, 1972H.E. Keithley, R.A. HelrigelKnockout bar assembly for pressesmetalworking presses
3,878,706Apr. 22, 1975G.C. Berry, H.E. KeithleyKnockout arrangement for pressesmetalworking presses
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