Title:
RETRIEVABLE THROUGH DRILL PIPE FORMATION FLUID SAMPLER
United States Patent 3441095


Inventors:
Youmans, Arthur H.
Application Number:
US3441095DA
Publication Date:
04/29/1969
Filing Date:
11/28/1967
Assignee:
Dresser, Ind
Primary Class:
Other Classes:
175/4.52
International Classes:
E21B7/00; E21B33/127; E21B43/116; E21B49/08; (IPC1-7): E21B43/116; E21B7/00; E21C19/00
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