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US Patent: 128,513
Improvement in Spirit Levels
Patentee:
Justus A. Traut (exact or similar names) - New Britain, CT

USPTO Classifications:
33/386

Tool Categories:
layout tools : levels

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

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

Witnesses:
E. W. Bliss
Jeremy W. Bliss

Patent Dates:
Granted: Jul. 02, 1872

Patent Pictures:
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Description:
One end of the face plate of a sprirt vial case is secured on a raised edge to the opposite end can be adjusted up and down by use of a spring and screw.

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