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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:
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Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Geometric Tool Co.

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