Document Type and Number:
Japanese Patent JPS6311516
Kind Code:
B2
Inventors:
HAYASHI FUKIO
KOBAYASHI KOSUKE
TACHIBANA MASAO
KOBAYASHI KOSUKE
TACHIBANA MASAO
Application Number:
JP9652283A
Publication Date:
March 14, 1988
Filing Date:
May 31, 1983
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
E21B7/00; E21B3/00; E21B15/00; E21B19/00; E21B19/16