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US Patent: 3,220,313
Machine Tool Power Drawbolt Mechanism
Patentee: Walter Schroeder (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 409/233 Tool Categories: metalworking machines : milling machines metalworking machines : metalworking machine mechanisms Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 02, 1964 Granted: Nov. 30, 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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