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US Patent: 2,365,748
Hydraulic Circuit
Patentee: Frank W. Curtis (exact or similar names) - Springfield, Hampden County, MA USPTO Classifications: 137/625.68, 60/380, 60/383, 91/27, 91/355 Tool Categories: metalworking machines : milling machines metalworking machines : machine tool controls Assignees: Van Norman Machine Tool Co. - Springfield, Hampden County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 27, 1941 Granted: Dec. 26, 1944 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Van Norman Machine Tool Co.

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