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US Patent: 369,239
Machine for Corrugating Metal Rollers
Patentee: George J. Fritz (exact or similar names) - St. Louis, MO USPTO Classifications: 409/289, 409/305 Tool Categories: metalworking machines : metal planers Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 17, 1887 Granted: Aug. 30, 1887 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Central Iron Works

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