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US Patent: 364,508
Device for Laying Off Geometric Figures
Patentee: Walter B. Griffiths (exact or similar names) - New York, NY USPTO Classifications: 12/122, 33/482, 33/566 Tool Categories: layout tools : protractors layout tools : special purpose gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 26, 1887 Granted: Jun. 07, 1887 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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