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发明名称
AIR VENT DEVICE FOR PIPELINE
摘要
申请公布号
JPH11311351(A)
申请公布日期
1999.11.09
申请号
JP19980131268
申请日期
1998.04.24
申请人
MEIWA KOGYO KK
发明人
MARUYAMA KAZUYUKI
分类号
F16K24/04;F16L55/07;(IPC1-7):F16K24/04
主分类号
F16K24/04
代理机构
代理人
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