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US Patent: 139,651
Taps and Dies
Patentee:
Albrecht E. Barthel (exact or similar names) - Detroit, Wayne County, MI

USPTO Classifications:
470/198

Tool Categories:
metalworking tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Feb. 18, 1873
Granted: Jun. 10, 1873

Patent Pictures:
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