Title:
Deformable packer
United States Patent 2519116


Inventors:
Crake, Wilfred S.
Application Number:
US6770748A
Publication Date:
08/15/1950
Filing Date:
12/28/1948
Assignee:
Shell, Dev
Primary Class:
Other Classes:
166/179, 166/187, 277/333, 277/336
International Classes:
E21B33/12; E21B33/127
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Other References:
None