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US Patent: 1,255,644
Protractor-level for drills and other tools
Patentee: Dennis D. Roth (exact or similar names) - Atlantic City, NJ USPTO Classifications: 33/333, 33/388 Tool Categories: layout tools : levels layout tools : levels : clinometers Assignees: None Manufacturer: Unknown Witnesses: Thomas F. Scott Donald R. Wallace	Patent Dates: Applied: Mar. 09, 1917 Granted: Feb. 05, 1918 Patent Pictures: [ 1 | 2 | 3 ] USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: The example shown is made of brass and marked only "PAT. FEB-5-18".

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