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US Patent: 110,407
Improvement in grooving-tools
Patentee: Claus Van Haagen (exact or similar names) - Philadelphia, PA USPTO Classifications: 409/231 Tool Categories: metalworking machines : milling machines : milling machine accessories Assignees: Claus Van Haagen - Philadelphia, PA Anthony Van Haagen - Philadelphia, PA Manufacturer: C. Van Haagen & Co. - Philadelphia, PA Witnesses: William A. Steel John B. Harding	Patent Dates: Granted: Dec. 20, 1870 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for C. Van Haagen & Co.

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