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US Patent: 1,413,056
Adjustable Plumb and Level
Patentees:
George L. Parrish (exact or similar names) - Columbus, OH
Charley L. Cooley (exact or similar names) - Columbus, OH

USPTO Classifications:
33/374

Tool Categories:
layout tools : levels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 16, 1921
Granted: Apr. 18, 1922

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Ralph Brendler
Description:
This level can "telescope" to make it longer or shorter, while still maintaining the proper adjustment.

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