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All Patents in class 427
Patents 16 - 30 of 44
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NumberDatePatenteeTitleType
261,198Jul. 18, 1882R. BartonDental Grinding Tooldental apparatus
323,372Jul. 28, 1885W. Stanley, Jr., E.P. ThopmsonCarbon for incandescent lampselectric arc lamps
334,472Jan. 19, 1886J.S. RobertsProcess of Ornamenting Glass Surfacesglass cutters
567,966Sep. 22, 1896D. DrawbaughSubstance for telephone-electrodes
577,671Feb. 23, 1897N. TeslaManufacture of Electrical Condensers, Coils, &c.
830,003Sep. 04, 1906J.M. RauhoffProcess of rendering cement blocks waterproof
878,463Feb. 04, 1908F. Hanaman, A. JustProcess of Manufacturing Incandescent Bodies for Electric Lamps incandescent light bulbs
1,675,419Jul. 03, 1928G.T. PflegerProcess of insulating motor windingsmotor windings
1,854,071Apr. 12, 1932E.C. SchachtMethod of manufacturing abrasives
2,027,307Jan. 07, 1936E.C. SchachtMethod of coating and apparatus therefor and product
2,041,345May 19, 1936F.O. JaquesMethod of Making a Tool tool making
2,061,388Nov. 17, 1936T. SchouInsulating Coil Windingmotor windings
2,082,182Jun. 01, 1937E.C. SchachtManufacture of abrasive articles
2,085,995Jul. 06, 1937W.I. Patnode, E.J. FlynnInsulated electrical conductor and method of making sameelectric motors
RE20,660Feb. 22, 1938E.C. SchachtMethod of coating and apparatus therefor and product
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