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US Patent: 85,850
Improvement in bench-pin
Patentee:
Thomas J. W. Porter (exact or similar names) - Grand Rapids, MI

USPTO Classifications:
144/287

Tool Categories:
work holding : workbench devices : bench stops

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Edward Taggart
Omar H. Simonds
Patent Dates:
Granted: Jan. 12, 1869

Patent Pictures:
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