Well tool mounting
United States Patent 2877062
US Patent References:
Grief collar
- - 2259023

Jacket for drill pipe couplings
- - 2281632


Inventors:
Hall, Elmer D.
Hall, John A.
Publication Date:
03/10/1959
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Assignee:
Hall, Elmer D.
Hall, John A.
Primary Class:
175/325.500
Other Classes:
29/447, 29/463
International Classes:
E21B17/10; E21B17/12; E21B17/00