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Patent number:
Patent Date:
US Patent: 794,753
Illuminated Spirit-Level
Patentee:
Raymond O. Stetson (
exact
or
similar
names) - Greenfield, MA
USPTO Classifications:
33/348.2
Tool Categories:
layout tools
:
levels
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Edwin A. Stratton
Forrest S. Stetson
Patent Dates:
Applied:
Dec. 27, 1902
Granted:
Jul. 18, 1905
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.
Description:
First patent for using electricity to illuminate the level vials.
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