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US Patent: 637,320
Machine for Nurling Metal
Patentee: Charles E. Billings (exact or similar names) - Hartford, Hartford County, CT USPTO Classifications: 125/37, 72/104, 72/703 Tool Categories: metalworking machines : embossing and knurling machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 05, 1899 Granted: Nov. 21, 1899 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Billings & Spencer Co.

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