Title:
Method and devices for interconnecting subterranean boreholes
United States Patent 3406766


Inventors:
Keller, Henderson John
Application Number:
US56355566A
Publication Date:
10/22/1968
Filing Date:
07/07/1966
Assignee:
JOHN KELLER HENDERSON
Primary Class:
Other Classes:
175/50
International Classes:
E21B7/06; E21B7/08
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