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US Patent: 92,927
Improvement in guide-attachments for boring-instruments
Patentee:
Arthur Amory (exact or similar names) - New York, NY

USPTO Classifications:
33/371, 81/28

Tool Categories:
woodworking tools : hand drills : drill accessories

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Alexander F. Roberts
Frank Blockley
Patent Dates:
Granted: Jul. 27, 1869

Patent Pictures:
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