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US Patent: 526,314
Bit-stock (with fast-acting rotary chuck)
Patentee:
Francis M. Hay (exact or similar names) - Erie, PA

USPTO Classifications:
279/40

Tool Categories:

Assignees:
James McGavin McKerrow - Oil City, PA

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Sep. 18, 1894

Patent Pictures:
USPTO (New site tip)
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