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US Patent: 500,382
Ratchet brace for drills (double crank gear mechanism)
Patentee:
David M. Fulton (exact or similar names) - Baltimore, MD

USPTO Classifications:
81/32, 81/36

Tool Categories:
woodworking tools : braces : geared braces

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Jun. 27, 1893

Patent Pictures:
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