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US Patent: 1,771,172
Wrench
Patentee: Bernard Fraser (exact or similar names) - Vancouver, BC Canada USPTO Classifications: 81/127, 81/129.5, 81/165 Tool Categories: wrenches : wrench adjustment types : self-adjust wrenches Assignees: None Manufacturer: Not known to have been produced Witnesses: none listed	Patent Dates: Applied: Mar. 14, 1929 Granted: Jul. 22, 1930 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Stan Schulz
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