Cup-seal for well tools
United States Patent 3120272
US Patent References:
Packer
- - 2136597

Tubing packer and hold-down mechanism
- - 2632514

Well packers
- - 2855051

Subsurface well bore packing element
- - 2988148


Inventors:
Cochran, Chudleigh B.
Publication Date:
02/04/1964
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Assignee:
Cicero, Brown C.
Primary Class:
277/337
Other Classes:
166/118, 277/342
International Classes:
E21B33/126; E21B33/128; E21B33/129; E21B33/12