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US Patent: 1,210,145
Folding grindstone-frame
Patentee: Lawrence V. Calhoun (exact or similar names) - Glenellyn, IL USPTO Classifications: 451/341, 451/344 Tool Categories: metalworking machines : grinders : grindstone frames Assignees: Sears, Roebuck & Co. - Chicago, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 07, 1916 Granted: Dec. 26, 1916 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Sears, Roebuck & Co.

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