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US Patent: 6,841
Transverse Calipers
Patentee:
William I. Van Ness (exact or similar names) - Baltimore, MD

USPTO Classifications:
33/798

Tool Categories:
layout tools : calipers

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Francis A. Uhl
Jason B. George
Patent Dates:
Granted: Oct. 30, 1849

Patent Pictures:
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