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US Patent: 654,370
Calipers
Patentee:
Otto J. Wahrer (exact or similar names) - Dayton, OH

USPTO Classifications:
33/800, 33/801

Tool Categories:
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Carl H. Noe
D. K. Allison
R. J. McCarty
Patent Dates:
Applied: Mar. 19, 1900
Granted: Jul. 24, 1900

Patent Pictures:
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