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US Patent: 117,784
Improvement in Hollow Augers
Patentee:
Silas Katz (exact or similar names) - Bossardsville, PA

USPTO Classifications:
30/495

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
J. A. Bossard
J. S. McNeal
Patent Dates:
Granted: Aug. 08, 1871

Patent Pictures: [ 1 | 2 ]
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