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US Patent: 1,001,206
Illuminated Spirit-Level
Patentee: James Irwin McCullough (exact or similar names) - Davenport, IA USPTO Classifications: 33/348.2 Tool Categories: layout tools : levels Assignees: None Manufacturer: Not known to have been produced Witnesses: Walter R. Gruld Lynne P. Townsend C. R. Hardy O. B. Hopkins	Patent Dates: Applied: Jan. 05, 1911 Granted: Aug. 22, 1911 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Ralph Brendler
Description: This level features a built in light bulb and battery to facilitate reading in dim situations.

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