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US Patent: 240,917
Tap for Threading Sockets
Patentee:
John McCandless (exact or similar names) - Allegheny, Allegheny County, PA

USPTO Classifications:
408/160, 408/165

Tool Categories:
metalworking tools : taps and dies

Assignees:
Chalfant & Co. - Allegheny County, PA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Nov. 04, 1880
Granted: May 03, 1881

Patent Pictures:
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