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US Patent: 532,658
Folding Ruler
Patentee: George Curtis Gillespie (exact or similar names) - Bath Beach, NY USPTO Classifications: 33/458, 33/495, 403/113 Tool Categories: rules : folding rules : folding rule joints Assignees: None Manufacturer: Not known to have been produced Witnesses: J. E. Humphrey A. P. Moroney	Patent Dates: Applied: Nov. 28, 1893 Granted: Jan. 15, 1895 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Russ Allen.
Description: All joints are made flush instead of having projecting knuckles on any sides while still folding the same way as conventional wooden folding rules.

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