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Patent number:
Patent Date:
US Patent: 286,469
Calipers and Dividers
Patentee:
William H. Mitchell (
exact
or
similar
names) - Boston, MA
USPTO Classifications:
33/558.06
Tool Categories:
layout tools
:
calipers
layout tools
:
compasses
:
dividers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Oscar F. Gunz
C. Sedgwick
Patent Dates:
Applied:
Nov. 20, 1882
Granted:
Oct. 09, 1883
Patent Pictures:
USPTO
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Google Patents
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