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US Patent: 343,178
Calipers
Patentee:
George W. Jopson (exact or similar names) - Meriden, CT

USPTO Classifications:
33/485, 33/558.05

Tool Categories:
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry Dryhurst
Willis I. Fenn
Patent Dates:
Applied: Nov. 30, 1885
Granted: Jun. 08, 1886

Patent Pictures:
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