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US Patent: RE4,569
Improvement in Machinery for Forming the Lips of Augers
Patentee:
James Swan (exact or similar names) - Seymour, CT

USPTO Classifications:
76/2

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:
George A. Rogers
Fred. A. Rugg

Patent Dates:
Granted: Sep. 26, 1871

Reissue Information:
Reissue of 116,509 (Jun. 27, 1871)

Patent Pictures: [ 1 | 2 ]
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Description:
Specialized machine for forming gouge shaped cutting lips of Cook's bits.

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