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US Patent: 521,430
Boring-bit
Patentee:
Abraham A. Bourgeous - East Longmeadow, MA

USPTO Classifications:
175/291, 408/180, 82/1.5

Tool Categories:
woodworking tools : hand drills : drill bits

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. D. Garfield
H. A. Chapin

Patent Dates:
Applied: Feb. 23, 1894
Granted: Jun. 12, 1894

Patent Pictures:
USPTO pdf tiff
Google Patents
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