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US Patent: 386,651
Attachment for Squares
Patentee: Charles F. Nichols (exact or similar names) - San Francisco, CA USPTO Classifications: 33/415, 33/418, 33/DIG16 Tool Categories: layout tools : squares Assignees: None Manufacturer: Not known to have been produced Witnesses: S. H. Nourse H. C. Lee	Patent Dates: Applied: Mar. 27, 1888 Granted: Jul. 24, 1888 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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