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Title:
OIL WELL PRODUCTION SYSTEM
United States Patent 3548939
Inventors:
Bennett, John D.
Publication Date:
12/22/1970
Export Citation:
Click for automatic bibliography generation
Assignee:
SUN OIL CO
Primary Class:
166/267
Other Classes:
95/261, 96/209
International Classes:
E21B43/12
;
E21B43/34
;
E21B43/12
;
E21B43/34
; (IPC1-7): E21B43/12
View Patent Images:
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