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Patents for Harry J. Caldwell
Patents 1 - 15 of 16
Number	Date	Patentee	Title	Type
2,194,638	Mar. 26, 1940	H.J. Caldwell	Horizontal honing machine	honing machines
2,246,199	Jun. 17, 1941	H.J. Caldwell	Horizontal honing machine	honing machines
2,247,479	Jul. 01, 1941	H.J. Caldwell	Honing machine	honing machines
2,287,085	Jun. 23, 1942	H.J. Caldwell	Honing machine	honing machines
2,322,346	Jun. 22, 1943	H.J. Caldwell	Honing machine	honing machines
2,343,275	Mar. 07, 1944	H.J. Caldwell, E.Y. Seborg	Honing machine	honing machines
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	honing machines
2,381,572	Aug. 07, 1945	H.J. Caldwell	Control mechanism for honing machines	honing machines
2,390,495	Dec. 11, 1945	H.J. Caldwell	Control mechanism for honing machines	honing machines
2,397,814	Apr. 02, 1946	H.J. Caldwell, S.F. Manning, E.Y. Seborg	Honing machine	honing machines
2,466,839	Apr. 12, 1949	H.J. Caldwell	Magnetic separator
2,541,202	Feb. 13, 1951	H.J. Caldwell	Apparatus for removing entrained particles from liquid coolant
2,564,593	Aug. 14, 1951	H.J. Caldwell	Magnetic separator
2,671,292	Mar. 09, 1954	E.Y. Seborg, H.J. Caldwell	Control Mechanism for Honing Machines	machine tool controls

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