Document Type and Number:
Japanese Patent JPH0160601
Kind Code:
B2
Inventors:
HAGA NOBUTAKE
YAMAMOTO TAKAO
NAKAMURA TAKUJI
IMANISHI NAOTO
YAMAMOTO TAKAO
NAKAMURA TAKUJI
IMANISHI NAOTO
Application Number:
JP19338983A
Publication Date:
December 25, 1989
Filing Date:
October 18, 1983
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
E01C7/18; E01C3/00; E01C7/26
Next Patent: JPH0160602