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Patent number:
Patent Date:
US Patent: 2,521,816
Double spiral ratchet wrench
Patentee:
Raymond B. Adams (
exact
or
similar
names) - Quinton, OK
USPTO Classifications:
408/120
,
408/124
,
74/127
,
81/DIG2
Tool Categories:
wrenches
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Oct. 08, 1946
Granted:
Sep. 12, 1950
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward George Langford
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