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Allen wrench set
US 2,878,701 A
Filed
: 08/14/1957
Issued
: 03/24/1959
Est. Priority Date
: 08/14/1957
Status: Expired due to Term
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Current Assignee
Arnold Weersma
Original Assignee
Arnold Weersma
Inventors
ARNOLD WEERSMA
Application Number
US03/678,073
Time in Patent Office
587 Days
Field of Search
US Class Current
81/438
CPC Class Codes
B25B 15/008
Allen-type keys
F16B 2200/10
Details of socket shapes
Y10S 81/10
Iris-type wrench head
Y10T 279/17008
Multiple alternative
Y10T 279/17821
Set screw
Y10T 403/7041
including set screw
Y10T 403/7098
Non-circular rod section is...
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