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US Patent: 758,283
Calipers
Patentee:
Frank Shafer (exact or similar names) - Camillus, NY

USPTO Classifications:
33/812

Tool Categories:
layout tools : measurement gauges

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. E. Arthur
H. E. Chase
Austin E. Daniels, Jr.

Patent Dates:
Applied: Jun. 08, 1903
Granted: Apr. 26, 1904

Patent Pictures:
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