Title:
FLOW-REVERSING LINER SHOE FOR WELL GRAVEL PACKING APPARATUS
United States Patent 3421586


Inventors:
Solum, James R.
Application Number:
US3421586DA
Publication Date:
01/14/1969
Filing Date:
08/29/1967
Assignee:
B & W INC
Primary Class:
Other Classes:
166/158, 166/205
International Classes:
E21B43/04; (IPC1-7): E21B43/04; E21B43/08
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