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US Patent: 587,715
Automatic Extensible and Collapsible Adjustable Tap
Patentee:
Franklin A. Errington (exact or similar names) - Edgewater, Richmond County, NY

USPTO Classifications:
408/154, 408/178

Tool Categories:
metalworking tools : taps and dies

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: May 14, 1895
Granted: Aug. 10, 1897

Patent Pictures:
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