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US Patent: 305,090
Bit-stock (unusual, geared)
Patentees:
William C. Marr - Onawa, IA
Albert J. Maughlin - Onawa, IA

USPTO Classifications:
81/36

Tool Categories:
woodworking tools : braces : geared braces

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Granted: Sep. 16, 1884

Patent Pictures:
USPTO pdf tiff
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