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US Patent: 520,797
Engravers Chuck
Patentee:
Fritz Mink (exact or similar names) - Philadelphia, PA

USPTO Classifications:
279/8, 81/4

Tool Categories:
work holding : vises : chucks
trade specific : engraver
trade specific : watchmaker

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: May 22, 1893
Granted: Jun. 05, 1894

Patent Pictures:
USPTO (New site tip)
Google Patents
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