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发明名称
METHOD OF REPAIR CONSTRUCTION OF DUCT
摘要
申请公布号
JPS6272989(A)
申请公布日期
1987.04.03
申请号
JP19850211441
申请日期
1985.09.24
申请人
OSAKA GAS CO LTD
发明人
TANAKA TOSHIAKI;SHIMOJO TOMOHIRO;SAKAIDA MASAMI
分类号
F16L55/16
主分类号
F16L55/16
代理机构
代理人
主权项
地址
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