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Patents Granted on 1957-05-??
Patents 1 - 15 of 30
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NumberDatePatenteeTitleType
2,791,067May 07, 1957J.J. FallsGrinding apparatusbench or pedestal grinders
2,791,070May 07, 1957L. SchallerAbrading machinesanding machines
2,791,248May 07, 1957D.D. BealePlated saw bladesawblades
2,791,304May 07, 1957J.W. Lehde, Jr., B.R. BetterSafe Torque Driverdrilling and boring tool holders
D180,271May 14, 1957R.C. DreierHack Sawhacksaws
2,791,824May 14, 1957W.J. GreenleafIndexable Insert Tool Holderinsert tool holders
2,791,825May 14, 1957W.J. GreenleafCutting Tool Holderinsert tool holders
2,791,871May 14, 1957A.M. JohnsonHoning machinehoning machines
2,791,885May 14, 1957B. SassenHydraulic Tracer Controlhydraulic apparatus
2,791,921May 14, 1957F.F. Rohrer, H.J. Ross, C.W. HeppenstallLathe System or the Likemetal lathes
2,791,946May 14, 1957P.C. HewettVariable Conical Cuttermilling machines
2,791,988May 14, 1957W.C. FischerDual Fuel Internal Combustion Enginefuel systems
2,792,015May 14, 1957R.V. SmithLiquid relief valvepressure regulators
2,792,033May 14, 1957A.E. BradleySwiveled jig sawscrollsaws
2,792,036May 14, 1957R.A. ButtkePlaner and attachments thereforwood planers
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