Document Type and Number:
Japanese Patent JPH0115645
Kind Code:
B2
Inventors:
OSADA YAMATO
ONOE TERUTAKA
ONOE TERUTAKA
Application Number:
JP16973881A
Publication Date:
March 20, 1989
Filing Date:
October 22, 1981
Export Citation:
Assignee:
OSAKA GAS CO LTD
International Classes:
E01C3/00; E01C19/10
Next Patent: JPH0115646