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US Patent: 331,613
Machine for Gooving Metal Rolls
Patentees: Charles B. Campbell (exact or similar names) - Buffalo, Erie County, NY William H. Campbell (exact or similar names) - Buffalo, Erie County, NY USPTO Classifications: 409/305, 83/917 Tool Categories: metalworking machines : metal planers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Aug. 29, 1885 Granted: Dec. 01, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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