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METHOD OF PRODUCING SHALE OIL FROM A SUBTERRANEAN OIL SHALE FORMATION
US 3,501,201 A
Filed
: 10/30/1968
Issued
: 03/17/1970
Est. Priority Date
: 10/30/1968
Status: Expired due to Term
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Current Assignee
Philip J. Closmann
,
Ronald P. Nordgren
Original Assignee
Philip J. Closmann
,
Ronald P. Nordgren
Inventors
Closmann, Philip J.
,
Nordgren, Ronald P.
Application Number
US04/771,961
Time in Patent Office
503 Days
Field of Search
US Class Current
299/4
CPC Class Codes
E21B 43/2405
in association with fractur...
E21B 43/28
Dissolving minerals other t...
E21B 43/281
using heat
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