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US Patent: 647,522
Optical Gage
Patentee: William J. Rideout (exact or similar names) - Freeport, IL USPTO Classifications: 33/200 Tool Categories: layout tools : special purpose gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: J. H. Vincent Henry B. Wille Clarence H. Walker H. Bernhof	Patent Dates: Applied: Aug. 28, 1899 Granted: Apr. 17, 1900 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens
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