Title:
Drill stem testing apparatus
United States Patent 3285344


Inventors:
Jensen, Lloyd I.
Application Number:
US51503865A
Publication Date:
11/15/1966
Filing Date:
12/20/1965
Assignee:
JOHNSTON TESTERS LTD
Primary Class:
Other Classes:
137/614, 166/165, 166/325
International Classes:
E21B49/08
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US Patent References:
3217806Fluid testing apparatus1965-11-16
3075585Fluid sampler1963-01-29
2176240Sampling device for wells1939-10-17
1634813Refrigerating apparatus1927-07-05
1437136Automatic safety check valve1922-11-28
0272286N/A1883-02-13