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Patent number:
Patent Date:
US Patent: 310,154
Spirit Level
Patentee:
Benjamin F. Tyler (
exact
or
similar
names) - Salem, NJ
USPTO Classifications:
33/349
,
33/379
Tool Categories:
layout tools
:
levels
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
J. M. Lippincott
George Hitcraft
Patent Dates:
Applied:
Jul. 31, 1884
Granted:
Dec. 30, 1884
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.
Description:
Sliding bar is used to mark the level position desired.
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