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US Patent: 2,620,823
Tracer Valve Mechanism with Dashpot
Patentees: Robert R. Adams (exact or similar names) - Cincinnati, Hamilton County, OH Raymond D. Wortendyke (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 188/313, 251/263, 251/29, 251/3, 251/47 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: Jul. 08, 1947 Granted: Dec. 09, 1952 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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