Document Type and Number:
Japanese Patent JPH0348316
Kind Code:
B2
Inventors:
MOROKI KAZUYOSHI
Application Number:
JP27710986A
Publication Date:
July 24, 1991
Filing Date:
November 20, 1986
Export Citation:
Assignee:
MOROKI KAZUYOSHI
International Classes:
E21B3/04; E02D5/34; E21B3/02; E21B11/00
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