04715020 is referenced by 69 patents and cites 8 patents.

Application Number
6/925810
Publication Number
4715020
Application Date
October 29, 1986
Publication Date
December 22, 1987
Inventor
Ralph A Landrum Jr
Houston
TX, US
Agent
E Eugene Thigpen
Assignee
Western Atlas International
DE, US
IPC
G01V 1/00
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