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US Patent: 1,526,233
Drafting Square
Patentee: Edward J. Koile (exact or similar names) - Staunton, IN USPTO Classifications: 33/418, 33/426 Tool Categories: layout tools : bevels layout tools : protractors Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jul. 23, 1923 Granted: Feb. 10, 1925 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This adjustable bevel square uses the corner of the square for an angle indicator.

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