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All Patents in class 451/363
Patents 31 - 45 of 51
Number	Date	Patentee	Title	Type
2,048,467	Jul. 21, 1936	E.G. Roehm	Grinding Machine	grinding machines
2,055,302	Sep. 22, 1936	E.S. McGonegal	Portable grinding tool	metal lathe accessories and attachments
2,063,659	Dec. 08, 1936	J.E. Caster, C. Booth	Internal Grinding Fixture	grinding machines
2,074,844	Mar. 23, 1937	C.H. Hill	Metalworking Machine	metal lathe accessories and attachments
2,090,992	Aug. 24, 1937	W.D. Archea	Thread Milling Machine	milling machines
2,113,287	Apr. 05, 1938	W.G. Baldenhofer	Machine for Grinding and Sharpening Broaches	broach sharpening machines
2,118,912	May 31, 1938	J.B. Armitage	Cutter Grinder	tool grinders
2,148,766	Feb. 28, 1939	A.W. Mall	Track grinding machine
2,182,725	Dec. 05, 1939	C. Jones	Tiltable adjustable sanding wheel	sanding machines
2,188,595	Jan. 30, 1940	T.L. Hedgpeth	Mounting for power tool	handheld power tools
2,223,732	Dec. 03, 1940	A.W. Mall	All purpose grinding apparatus
2,308,739	Jan. 19, 1943	G.W. Binns	Centerless Grinder	grinding machines
2,315,104	Mar. 30, 1943	W.G. Baldenhofer	Inclinable grinder spindle	surface grinders
2,321,442	Jun. 08, 1943	J.C. Wilson	Collapsible antifriction nut	industrial machine clutches
2,384,512	Sep. 11, 1945	C.A. Wiken, E.A. Reibig	Machine protective apparatus	woodworking machine safety guards

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