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US Patent: 306,123
Calipers
Patentee:
C. Wilhelm Wessman (exact or similar names) - Chicago, IL

USPTO Classifications:
33/501.06, 33/709

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Bernhard Roziene
A. J. Frank
Patent Dates:
Applied: Mar. 27, 1884
Granted: Oct. 07, 1884

Patent Pictures:
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