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US Patent: 873,441
Reversing tap-holder
Patentee: Wilbur A. Leonard (exact or similar names) - New Haven, CT USPTO Classifications: 408/133, 74/377 Tool Categories: metalworking machines : drilling and boring : tapping heads and chucks Assignees: Geometric Tool Co. - New Haven, CT Manufacturer: Geometric Tool Co. - New Haven, CT Witnesses: Edith M. Buckbee C. C. Chatfield	Patent Dates: Applied: Feb. 06, 1907 Granted: Dec. 10, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Geometric Tool Co.

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