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Patents for Harry J. Caldwell
Patents 1 - 10 of 16
Picture	Number	Date	Patentee	Title
	2,194,638	Mar. 26, 1940	H.J. Caldwell	Horizontal honing machine
	2,246,199	Jun. 17, 1941	H.J. Caldwell	Horizontal honing machine
	2,247,479	Jul. 01, 1941	H.J. Caldwell	Honing machine
	2,287,085	Jun. 23, 1942	H.J. Caldwell	Honing machine
	2,322,346	Jun. 22, 1943	H.J. Caldwell	Honing machine
	2,343,275	Mar. 07, 1944	H.J. Caldwell, E.Y. Seborg	Honing machine
	2,345,581	Apr. 04, 1944	H.J. Caldwell	Machine tool
	2,377,310	Jun. 05, 1945	H.J. Caldwell, E.Y. Seborg	Control mechanism for honing machines
	2,381,572	Aug. 07, 1945	H.J. Caldwell	Control mechanism for honing machines
	2,390,495	Dec. 11, 1945	H.J. Caldwell	Control mechanism for honing machines

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