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US Patent: 684,433
Differential Speed Mechanism
Patentee: Herman R. Isler (exact or similar names) - Hamilton, OH USPTO Classifications: 74/353 Tool Categories: metalworking machines : metal lathes Assignees: Charles F. Hilker - Hamilton, OH Manufacturer: Not known to have been produced Witnesses: Arthur Letherby Robert S. Carr John Francis J. M. Trembly	Patent Dates: Applied: Feb. 04, 1901 Granted: Oct. 15, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
Description: Robert S. Carr - patent attorney

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