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All Patents in class 451/331
Patents 1 - 9 of 9
First set of recordsLast set of records
NumberDatePatenteeTitleType
78,915Jun. 16, 1868E.C. AtkinsImprovement in machines for polishing metal platestool making machines
132,231Oct. 15, 1872A. AssmanImprovement in Grinding Apparatus
RE5,228Jan. 07, 1873A. WarthMachine for cutting lead pencilspencil making machines
430,398Jun. 17, 1890J.M. NashMachine for smoothing curved surfacessanding machines
672,511Apr. 23, 1901J.M. NashAbrading-machinesanding machines
2,535,439Dec. 26, 1950J. McEwanSaw sharpenersaw sharpening machines
2,821,818Feb. 04, 1958H.E. McGee, W.S. SwansonLapping Machine and Automatic Feed Mechanism Thereforlapping machines
2,835,085May 20, 1958J.F. MantingMagnetic dial feeder
2,958,989Nov. 08, 1960R.F. PendergastSpreading and feeding assemblysanding machines
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