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发明名称
DROSSELKLAPPENVENTIL
摘要
<p>A butterfly valve characterized by the addition of fluid purge supply means to prevent leakage.</p>
申请公布号
DE2707485(A1)
申请公布日期
1977.08.25
申请号
DE19772707485
申请日期
1977.02.21
申请人
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
发明人
VAN T SANT,WILLEM CORNELIS
分类号
F16K1/22;F16K1/226;F16K25/02;(IPC1-7):16K1/226
主分类号
F16K1/22
代理机构
代理人
主权项
地址
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