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US Patent: 3,225,117
Weather-Resistant Plastics
Patentee: Robert C. Harper (exact or similar names) - Loveland, Hamilton County, OH USPTO Classifications: 525/48, 525/49 Tool Categories: manufacturing : manufacturing processes Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 15, 1962 Granted: Dec. 21, 1965 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.

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