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Patent number:
Patent Date:
US Patent: 160,471
Improvement in Stair-Builders' Rules
Patentee:
John J. Robinson (
exact
or
similar
names) - Orange Court House, VA
USPTO Classifications:
33/332
,
33/342
,
33/666
Tool Categories:
rules
:
measuring rods
trade specific
:
carpenter
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
A Thomson
Richard Chapman
Patent Dates:
Applied:
Dec. 17, 1874
Granted:
Mar. 02, 1875
Patent Pictures:
USPTO
(New site tip)
Google Patents
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