Title:
DRILL STEM MEMBER
Document Type and Number:
Japanese Patent JPS5781589
Kind Code:
A
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Inventors:
UIRIAMU AARU GARETSUTO
Application Number:
JP14565581A
Publication Date:
May 21, 1982
Filing Date:
September 17, 1981
Export Citation:
Assignee:
ONCOR CORP
International Classes:
E21B17/00; E21B17/04; (IPC1-7): E21B17/04