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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:
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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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