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US Patent: 2,500,989
Metallurgical apparatus
Patentees: Albert L. Hartley (exact or similar names) - Cincinnati, OH Adolph H. Davis (exact or similar names) - Norwood, OH William D. Whalen (exact or similar names) - Norwood, OH USPTO Classifications: 266/126, 266/258, 266/261, 266/96, 266/97, 414/742 Tool Categories: specialty machines : flame hardening machines Assignees: R. K. LeBlond Machine Tool Co. - Cincinnati, OH Manufacturer: R. K. LeBlond Machine Tool Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Jul. 10, 1946 Granted: Mar. 21, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for R. K. LeBlond Machine Tool Co.

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