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US Patent: 632,764
Hollow auger
Patentee:
Joseph Stephens (exact or similar names) - Forest City, PA

USPTO Classifications:
144/78, 175/249, 175/403, 175/421

Tool Categories:
woodworking tools : hand drills : drill bits : hollow bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Sep. 12, 1899

Patent Pictures:
USPTO (New site tip)
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