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US Patent: 133,570
Improvement in Hollow Augers
Patentee:
John Deming (exact or similar names) - Salem, OH

USPTO Classifications:
30/495

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

Assignees:
Albert R. Silver - Salem, OH
John Deming - Salem, OH

Manufacturer:
Silver & Deming - Salem, OH

Witnesses:
N. B. Watson
N. A. Morlan

Patent Dates:
Granted: Dec. 03, 1872

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Silver & Deming Mfg. Co.

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