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US Patent: 2,546,906
Screw-actuated vise having releasable nut for quickly opening or closing the jaws
Patentees: Fred P. Hopfeld (exact or similar names) - Elmwood Park, IL Anthony M. Sasgen (exact or similar names) - Chicago, IL USPTO Classifications: 269/182, 269/285, 269/85 Tool Categories: work holding : vises : bench vises Assignees: Grand Specialties Co. - Chicago, IL Manufacturer: Grand Specialties Co. - Chicago, IL Witnesses: Unknown	Patent Dates: Applied: Nov. 30, 1945 Granted: Mar. 27, 1951 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Carl Matthews "Vintage Machinery" entry for Grand Specialties Co.

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