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US Patent: 2,191,137
Headstock Positioning Mechanism
Patentee: Winthrop Trible (exact or similar names) - Cincinnati, OH USPTO Classifications: 192/142A, 451/398, 451/407, 477/23, 82/146 Tool Categories: metalworking machines : grinding machines Assignees: Cincinnati Grinders, Inc. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 20, 1937 Granted: Feb. 20, 1940 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Grinders, Inc.

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