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PIPE CLOSURE PLUG
US 3,494,504 A
Filed
: 12/10/1968
Issued
: 02/10/1970
Est. Priority Date
: 12/10/1968
Status: Expired due to Term
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Current Assignee
Joseph C. Jackson
Original Assignee
Joseph C. Jackson
Inventors
Jackson, Joseph C.
Application Number
US04/782,618
Time in Patent Office
427 Days
Field of Search
US Class Current
220/237
CPC Class Codes
F16L 55/132
the closure device being a ...
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