Well packer
United States Patent 2849070
US Patent References:
/0672255.html
- - 0672255

Seal
- - 2401539

Well tool
- - 2438673


Inventors:
Maly, George P.
Publication Date:
08/26/1958
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Assignee:
UNION OIL CO
Primary Class:
277/336
Other Classes:
277/934, 165/178
International Classes:
E21B33/12