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All Patents in class 451/347
Patents 1 - 9 of 9
First set of recordsLast set of records
1,987,837Jan. 15, 1935A.W. MallPortable grinding machine
2,081,360May 25, 1937A.W. MallRail slotter
2,106,034Jan. 18, 1938A.W. MallRail grinder
2,116,491May 03, 1938A.W. MallAngle grinding spindle
2,148,766Feb. 28, 1939A.W. MallTrack grinding machine
2,214,141Sep. 10, 1940A.W. MallRail slotter
2,223,732Dec. 03, 1940A.W. MallAll purpose grinding apparatus
3,509,667May 05, 1970K.L. LindmarkMethod of grinding welded railtrack maintenance machinery
3,566,546Mar. 02, 1971K.L. LindmarkApparatus for grinding welded railtrack maintenance machinery
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