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Patent number:
Patent Date:
US Patent: 496,679
Beam Calipers
Patentee:
Alfred Barker (
exact
or
similar
names) - Richfield Springs, NY
USPTO Classifications:
33/806
Tool Categories:
layout tools
:
measurement gauges
Assignees:
None
Manufacturer:
Unknown
Witnesses:
John C. Kehrer
C. L. House
Patent Dates:
Applied:
Jan. 09, 1893
Granted:
May 02, 1893
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
Description:
This caliper was advertised in the 07 Jul 1894 issue of Scientific American, page 16.
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