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US Patent: 2,612,114
Vane Pump or Motor
Patentee: Walter Ernst (exact or similar names) - Dayton, Montgomery County, OH USPTO Classifications: 418/26, 418/268, 418/27 Tool Categories: metalworking machines : metalworking machine mechanisms : hydraulic apparatus Assignees: Thompson Grinder Co. - Springfield, Clark County, OH Manufacturer: Thompson Grinder Co. - Springfield, Clark County, OH Witnesses: Unknown	Patent Dates: Applied: Apr. 06, 1948 Granted: Sep. 30, 1952 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Thompson Grinder Co.
Description: This patent was listed on a Thompson Grinder Co. patent plate.

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