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All Patents in class 451/287
Patents 1 - 14 of 14
First set of recordsLast set of records
NumberDatePatenteeTitleType
282,049Jul. 31, 1883A. CampbellGrinding Machinestone dressing machines
282,761Aug. 07, 1883J.T. ObenchainMachine for Facing Millstonesmiller
493,294Mar. 14, 1893H.E. ProcunierApparatus for Edging Metal Ribbons or Stripesspring making machines
1,084,628Jan. 20, 1914B.M. HansonMetal Reducing Machinesurface grinders
1,392,325Oct. 04, 1921B.M. HansonVertical Surface Grinding Machinesurface grinders
1,424,764Aug. 08, 1922C. KnowlesSurface Grindersurface grinders
1,535,080Apr. 21, 1925H.K. SpencerMeans For Controlling Feeding Mechanismssurface grinders
1,548,562Aug. 04, 1925H.K. SpencerMeans For And Method Of Handling Work Piecesmagnetic chucks
1,599,374Sep. 07, 1926H.F. SkillingsGrinding Machinesurface grinders
1,628,618May 10, 1927H.K. SpencerMeans For Handling Articlesgrinding attachments
1,656,347Jan. 17, 1928J.A. DoaneSizing Device for Surface Grinderssurface grinders
2,105,872Jan. 18, 1938A.L. WarnerGrinding machinesharpeners
2,138,264Nov. 29, 1938A.L. WarnerWork holder for mower sections
2,751,722Jun. 26, 1956H.F. SkillingsGauging Device For Surface Grindergrinding attachments
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