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US Patent: 626,385
Tap
Patentee:
Alfred Johnson (exact or similar names) - Philadelphia, PA

USPTO Classifications:
408/154, 408/160

Tool Categories:
metalworking tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Aug. 03, 1898
Granted: Jun. 06, 1899

Patent Pictures:
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