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US Patent: 820,028
Level
Patentee:
Justus A. Traut - New Britain, CT

USPTO Classifications:
33/386

Tool Categories:
layout tools : levels : level adjustments

Assignees:
The Stanley Rule & Level Co. - New Britain, CT

Manufacturer:
The Stanley Rule & Level Co. - New Britain, CT

Witnesses:
H. S. Walter
Chas. B. Stanley

Patent Dates:
Applied: Oct. 23, 1905
Granted: May 08, 1906

Patent Pictures:
USPTO pdf tiff
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Description:
This is a simple screw-based adjustment for level vials. It was used on many Stanley level models, and is a commonly encountered patent marking.

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