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Perforation sealer
US 3,376,934 A
Filed
: 11/19/1965
Issued
: 04/09/1968
Est. Priority Date
: 11/19/1965
Status: Expired due to Term
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Current Assignee
Bertram T. William
,
James F. Mcphail
Original Assignee
Bertram T. William
,
James F. Mcphail
Inventors
William, Bertram T.
,
Mcphail, James F.
Application Number
US04/508,814
Time in Patent Office
872 Days
Field of Search
US Class Current
166/193
CPC Class Codes
E21B 33/138
Plastering the borehole wal...
E21B 43/261
Separate steps of (1) cemen...
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