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Document Type and Number:
Japanese Patent JPH0140165
Kind Code:
B2
Inventors:
KAMEOKA TAKASHI
ADACHI SUSUMU
Application Number:
JP12103681A
Publication Date:
August 25, 1989
Filing Date:
July 31, 1981
Export Citation:
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Assignee:
OSAKA GAS CO LTD
International Classes:
E01C9/00; E01C3/00; E01C9/08



 
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