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US Patent: 482,686
Knurling or Ornamenting Watch Cases
Patentee: Fritz Mink (exact or similar names) - Philadelphia, PA USPTO Classifications: 101/6 Tool Categories: metalworking machines : embossing and knurling machines trade specific : watchmaker Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 11, 1890 Granted: Sep. 13, 1892 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Steve Gosselin

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