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All Patents in class 451/140
Patents 16 - 19 of 19
Number	Date	Patentee	Title	Type
2,000,614	May 07, 1935	E.G. Roehm	Grinding Machine	grinding machines
2,043,408	Jun. 09, 1936	E.F. Haas	Grinding Machine	grinding machines
2,834,160	May 13, 1958	G.E. Lillie	Grinding machine	grinders
2,962,840	Dec. 06, 1960	C.H. Werth	Grinding apparatus	grinders

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