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Patent number:
Patent Date:
US Patent: 1,978,590
Wrench joint
Patentees:
Edward Henry Peterson (
exact
or
similar
names) - Chicago, IL
Norris F. McNaught (
exact
or
similar
names) - Chicago, IL
USPTO Classifications:
464/119
,
81/177.75
Tool Categories:
Assignees:
Duro Metal Products Co.
- Chicago, IL
Manufacturer:
Duro Metal Products Co.
- Chicago, IL
Witnesses:
Unknown
Patent Dates:
Applied:
Jan. 12, 1934
Granted:
Oct. 30, 1934
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin
Vintage Machinery entry for Duro Metal Products Co.
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