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US Patent: 208,492
Key-Seat or Pinion Cutter
Patentee: John W. Post (exact or similar names) - New York, NY USPTO Classifications: 409/288, 409/304 Tool Categories: metalworking machines : key seating machines Assignees: Useful Machinery Co. - New York, NY Manufacturer: Useful Machinery Co. - New York, NY Witnesses: Unknown	Patent Dates: Applied: Mar. 07, 1878 Granted: Oct. 01, 1878 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Useful Machinery Co.

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