US Patent: 534,303 - Spirit-Level


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US Patent: 534,303

Spirit-Level

Patentee:

Justus A. Traut (exact or similar names) - New Britain, CT

USPTO Classifications:

33/379

Tool Categories:

layout tools : levels

Assignees:

None

Manufacturer:

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

Witnesses:

Fred J Dole

Frederick A. Boland

J. L. Edwards, Jr.

Patent Dates:
Applied:	Oct. 08, 1894
Granted:	Feb. 19, 1895

Patent Pictures:

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Description:

Another level vial carrier, similar to his previous design (523,023 - 7/17/1894). The patent claims also make mention of a "tensioning device" for the vial, but it is not clear how this works