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US Patent: 1,607,614
Tapping machine
Patentee:
James H. Graham (exact or similar names) - Torrington, CT

USPTO Classifications:
408/36, 408/87, 408/9, 470/178, 470/181, 470/99, 74/322

Tool Categories:
metalworking machines : drilling and boring : tapping machines

Assignees:
Torrington Co. - Torrington, CT

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jul. 25, 1921
Granted: Nov. 23, 1926

Patent Pictures:
USPTO (New site tip)
Google Patents
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