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经营范围
发明名称
DOUBLE PIPING
摘要
申请公布号
JPS63176887(A)
申请公布日期
1988.07.21
申请号
JP19870004845
申请日期
1987.01.14
申请人
HITACHI LTD
发明人
GOTO KANEO;YOSHINAGA TOSHIAKI;AOKI MASATAKA
分类号
F16L7/00
主分类号
F16L7/00
代理机构
代理人
主权项
地址
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