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Patent number:
Patent Date:
US Patent: 253,266
Screw Nut
Patentee:
Samuel Darling (
exact
or
similar
names) - Providence, RI
USPTO Classifications:
470/176
,
74/424.71
,
74/441
,
82/110
Tool Categories:
specialty machines
:
nut or bolt making machines
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
H. R. Davis
C. H. Mathewson
Patent Dates:
Applied:
Oct. 29, 1881
Granted:
Feb. 07, 1882
Patent Pictures:
USPTO
(New site tip)
Google Patents
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