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US Patent: 1,403,606
Level
Patentee:
Charles L. Klapproth (exact or similar names) - Midland, TX

USPTO Classifications:
33/374, 33/382, 33/404, 33/426, 33/500

Tool Categories:
layout tools : levels
layout tools : bevels
layout tools : protractors

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Jun. 11, 1921
Granted: Jan. 17, 1922

Patent Pictures:
USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Ralph Brendler
Description:
This level is hinged in the center to allow it to be used as a bevel gauge. It also includes sights at each end to allow it to be used as a sighting-level, and a graduated plate to allow it to be used as a protractor.

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