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US Patent: 638,274
Metal-working machine
Patentees: Salmon W. Putnam - Fitchburg, MA Salmon W. Putnam, Jr. - Fitchburg, MA USPTO Classifications: 409/327 Tool Categories: metalworking machines : metal shapers Assignees: None Manufacturer: Putnam Machine Co. - Fitchburg, MA Witnesses: Percival R. Bowers George H. Knight	Patent Dates: Applied: Jun. 23, 1899 Granted: Dec. 05, 1899 Patent Pictures: USPTO pdf tiff Google Patents Report data errors or omissions "Vintage Machinery" entry for Putnam Machine Co.

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