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All Patents in class 33/501
Patents 1 - 12 of 12
First set of recordsLast set of records
NumberDatePatenteeTitleType
61,926Feb. 12, 1867J.S. CopelandScrew Gagemeasurement gauges
196,976Nov. 13, 1877H.W. HillGage for Handling and Distributing Paper, Circulars, &c.paper gages
362,816May 10, 1887G.W. BurchardScale for Indicating the Butter Value of Milk and Creammeasuring apparatus
586,441Jul. 13, 1897H.T. KingsburyRim-spacing machinehorizontal drilling machines
746,622Dec. 08, 1903A.J. WoldSlip and Shrinkage Gagebore gages
759,512May 10, 1904H. FrahmMethod of Measuring the Revolutions of Rotating Shaftsrpm speed gauges and tachometers
1,017,639Feb. 13, 1912E.C. MershonGage for straight-edgessaw sharpening tools
1,107,276Aug. 18, 1914H.P. FarringtonCombination Toolcombination tools
1,512,823Oct. 21, 1924P.J. DarlingtonMicrometer Calipermicrometers
2,052,153Aug. 25, 1936H.H. WillisSpherometermeasurement gauges
2,548,490Apr. 10, 1951O.A. MullerDepth and Angle Gaugemicrometer depth gauges
3,263,374Aug. 02, 1966P.J. Gruber, A.D. StuckeyRoll Grinder Comparator Gaugeroll grinding machines
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