Title:
Signal transmission system
United States Patent 3090031
Inventors:
Arthur, Lord. H.
Application Number:
US84311059A
Publication Date:
05/14/1963
Filing Date:
09/29/1959
Assignee:
TEXACO INC
Primary Class:
Other Classes:
324/323
International Classes:
E21B47/12; G01V3/34
View Patent Images:
Foreign References:
FR1184826A1959-07-27