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US Patent: 2,521,816
Double spiral ratchet wrench
Patentee: Raymond B. Adams (exact or similar names) - Quinton, OK USPTO Classifications: 408/120, 408/124, 74/127, 81/DIG2 Tool Categories: wrenches Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 08, 1946 Granted: Sep. 12, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward George Langford

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