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Patent number:
Patent Date:
US Patent: 1,299,838
Indicator
Patentee:
Clarence J. Keller (
exact
or
similar
names) - Columbus, OH
USPTO Classifications:
116/291
,
33/603
,
451/8
Tool Categories:
layout tools
:
measurement gauges
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
George D. Barok
Horatio S. Atehum
Patent Dates:
Applied:
Mar. 19, 1918
Granted:
Apr. 08, 1919
Patent Pictures:
USPTO
(New site tip)
Google Patents
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