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US Patent: 312,548
Level L-Shaped Level
Patentee: John W. Atkinson (exact or similar names) - Benton, AR USPTO Classifications: 33/273, 33/354, 33/429, 33/451 Tool Categories: layout tools : levels layout tools : squares Assignees: None Manufacturer: Not known to have been produced Witnesses: Daniel S. Wright A. D. Jones Wm. A. Rosenbaum John Welch	Patent Dates: Applied: Jun. 05, 1884 Granted: Feb. 17, 1885 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This level is L-Shaped to allow it to be used as a carpenters' square as well as a plumb and level. It also contains a compass in the stock.

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