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US Patent: 3,150,569
Piston Mechanism
Patentee: Lawrence A. Attermeyer (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 92/14, 92/193, 92/24, 92/28 Tool Categories: metalworking machines : metalworking machine mechanisms : hydraulic apparatus Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 04, 1963 Granted: Sep. 29, 1964 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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