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US Patent: 67,785
Improvement in center-bits
Patentees:
Stephen Devoe (exact or similar names) - New York, NY
William H. McMillan (exact or similar names) - New York, NY

USPTO Classifications:
144/150, 144/219

Tool Categories:
woodworking machines : machine and tool cutters : cutters

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Aug. 13, 1867

Patent Pictures:
USPTO (New site tip)
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