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US Patent: 80,515
Improvement in Boring-Tools
Patentee:
August Steinbok (exact or similar names) - New York, NY

USPTO Classifications:
408/30

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
W. Hauff
E. F. Kastenhuber
Patent Dates:
Granted: Jul. 28, 1868

Patent Pictures:
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