Patents Granted on 1940-07-30


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Patents Granted on 1940-07-30
Patents 1 - 11 of 11
Number	Date	Patentee	Title	Type
2,209,307	Jul. 30, 1940	F. Esz, A.H. Dall	Surface Finishing Machine	grinding machines
2,209,379	Jul. 30, 1940	M.A. Bell	Clamping device	clamps
2,209,469	Jul. 30, 1940	E.G. Roehm, L.F. Nenninger	Operating Control Mechanism for Milling Machines	milling machines
2,209,484	Jul. 30, 1940	H.E. Tautz	Variable speed mechanism	drill press speed change mechanisms
2,209,558	Jul. 30, 1940	O. Block, J. Bing	Magnetic clamping appliance	surface gauges
2,209,562	Jul. 30, 1940	J.C. Drader	Worm Element Lapping Machine	gear lapping machines
2,209,656	Jul. 30, 1940	A.W. Mall	Vibrator
2,209,767	Jul. 30, 1940	E.J. Dillman	Thermostat	thermostats
2,209,768	Jul. 30, 1940	E.J. Dillman	Thermostat	thermostats
2,209,938	Jul. 30, 1940	L.L. Schauer	Lubricating means	radial drill presses
2,209,939	Jul. 30, 1940	L.L. Schauer	Automatically controlled gravity oiler	metalworking machine lubrication