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US Patent: 417,486
Bit attachment
Patentee:
Joseph N. Isabel (exact or similar names) - Concord, NH

USPTO Classifications:
408/202

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Dec. 17, 1889

Patent Pictures:
USPTO (New site tip)
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