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Gas leakage test box
US 2,658,434 A
Filed
: 06/21/1951
Issued
: 11/10/1953
Est. Priority Date
: 06/21/1951
Status: Expired due to Term
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Current Assignee
Donald B. Miller
Original Assignee
Donald B. Miller
Inventors
Miller, Donald B.
Application Number
US03/232,797
Time in Patent Office
873 Days
Field of Search
US Class Current
138/90
CPC Class Codes
F17D 5/02
Preventing, monitoring, or ...
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