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US Patent: 209,782
Improvement in the Manufacture of Auger-Bits
Patentee:
James Swan - Seymour, CT

USPTO Classifications:
409/76, 451/250, 451/48, 76/102, 76/3

Tool Categories:
tool making : making drills and augers
woodworking tools : hand drills : drill bits : auger bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. W. Gregory
N. E. Whitney

Patent Dates:
Applied: Sep. 02, 1878
Granted: Nov. 12, 1878

Patent Pictures: [ 1 | 2 ]
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