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US Patent: 223,727
Combined Square, Protractor, &c.
Patentee: Samuel D. Halley (exact or similar names) - St. Louis, MO USPTO Classifications: 33/419 Tool Categories: layout tools : squares : miter squares Assignees: Samuel D. Halley - St. Louis, MO Williams Daman - St. Louis, MO Manufacturer: Not known to have been produced Witnesses: Charles D. Moody Samuel S. Boyd	Patent Dates: Applied: Dec. 06, 1879 Granted: Jan. 20, 1880 Patent Pictures: [ 1 | 2 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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