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US Patent: 1,166,597
Grinding and refining mill
Patentee: Herbert L. Johnston (exact or similar names) - Troy, OH USPTO Classifications: 209/139.1 Tool Categories: Assignees: Hobart Mfg. Co. - Troy, OH Manufacturer: Not known to have been produced Witnesses: R. McKenzie W. H. Hartley	Patent Dates: Applied: May 27, 1915 Granted: Jan. 04, 1916 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Hobart Mfg. Co.

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