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US Patent: 2,685,219
Open-End Wrench Jaws Having Thrust and Pull Surfaces of Different Curvature
Patentee: Fritz Diebold (exact or similar names) - Geneva, Romandy, Switzerland USPTO Classifications: 81/119 Tool Categories: wrenches : nut wrenches wrenches : wrench components : wrench jaw components Assignees: None Manufacturer: New Britain Machine Co. - New Britain, Hartford County, CT Witnesses: Unknown	Patent Dates: Applied: Mar. 23, 1953 Granted: Aug. 03, 1954 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Stan Schulz "Vintage Machinery" entry for New Britain Machine Co.
Description: Applied for in Switzerland, 31 Mar 1952.

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