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Patent number:
Patent Date:
US Patent: 138,113
Improvement in Try Squares
Patentee:
Wilbur F. Arnold (
exact
or
similar
names) - Winthrop, CT
USPTO Classifications:
33/480
Tool Categories:
layout tools
:
squares
:
try squares
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Edgar W. Arnold
David Shiverick
Patent Dates:
Applied:
Oct. 26, 1872
Granted:
Apr. 22, 1873
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Russ Allen.
Description:
User adjustable try square. A single screw-cam locks the blade into place.
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