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US Patent: 669,766
Rule Joint
Patentee: Charles E. Ricker (exact or similar names) - New Britain, CT USPTO Classifications: 403/101 Tool Categories: rules : folding rules : folding rule joints Assignees: Justus A. Traut - New Britain, CT Manufacturer: Not known to have been produced Witnesses: Justus A. Traut Patrick Ahern	Patent Dates: Applied: Aug. 18, 1900 Granted: Mar. 12, 1901 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.

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