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US Patent: 422,546
Die for Making Bits
Patentee:
James Swan (exact or similar names) - Seymour, CT

USPTO Classifications:
72/475

Tool Categories:
tool making : making drills and augers
woodworking tools : hand drills : gimlets

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Gustav E. Tiedemann
Henry C. Schneider

Patent Dates:
Applied: Dec. 04, 1889
Granted: Mar. 04, 1890

Patent Pictures: [ 1 | 2 ]
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