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US Patent: 288,961
Calipers
Patentee:
Oliver D. Warfield (exact or similar names) - Chicopee Falls, MA

USPTO Classifications:
33/558.1

Tool Categories:
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. J. Warner
I. H. Page
Patent Dates:
Applied: Oct. 10, 1883
Granted: Nov. 20, 1883

Patent Pictures:
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