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All Patents in class 451/17
Patents 1 - 12 of 12
First set of recordsLast set of records
NumberDatePatenteeTitleType
208,712Oct. 08, 1878E. BrownMachine for Turning Needle Blanksneedle making machines
732,184Jun. 30, 1903B.M. HansonDimensioning apparatusmeasuring tools
781,434Jan. 31, 1905A.B. LandisAutomatic sizing mechanism for grinding-machinesgrinders
1,535,080Apr. 21, 1925H.K. SpencerMeans For Controlling Feeding Mechanismssurface grinders
1,763,201Jun. 10, 1930F.D. Van NormanMagnetic throw-off for grinding machinesgrinders
1,891,662Dec. 20, 1932F.S. Haas, C. BoothMachine Toolgrinding machines
1,926,603Sep. 12, 1933B.F. StowellAutomatic feed for grinding machinesgrinders
1,991,953Feb. 19, 1935L.F. NenningerGrinding Machinegrinding machines
2,042,257May 26, 1936C.W. Hopkins, R.E. HarrisonMachine Toolgrinding machines
2,149,409Mar. 07, 1939F.D. Van Norman, B.F. Stowell, R.S. PyneOscillating grindergrinders
2,751,722Jun. 26, 1956H.F. SkillingsGauging Device For Surface Grindergrinding attachments
3,877,179Apr. 15, 1975E. HammannWork Locating Device for Grinding Machinesgrinding machines
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