Title:
Earth formation logging system
United States Patent 2917704
Inventors:
Arps, Jan J.
Application Number:
US43173454A
Publication Date:
12/15/1959
Filing Date:
05/24/1954
Assignee:
Arps, Jan J.
Primary Class:
Other Classes:
175/50, 324/356, 346/72
International Classes:
E21B17/00; E21B47/12; G01V3/20
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