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Patent number:
Patent Date:
US Patent: 484,004
Screw-driver
Patentees:
John H. Parsons (
exact
or
similar
names) - Augusta, ME
George E. Gay (
exact
or
similar
names) - Augusta, ME
USPTO Classifications:
74/127
Tool Categories:
screwdrivers
:
screwdriver mechanisms
:
spiral screwdrivers
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Elijah Hayward
Harry W. Golder
Patent Dates:
Applied:
Nov. 16, 1891
Granted:
Oct. 11, 1892
Patent Pictures:
USPTO
(New site tip)
Google Patents
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