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发明名称
Indicating means
摘要
申请公布号
US2767681(A)
申请公布日期
1956.10.23
申请号
US19530352898
申请日期
1953.05.04
申请人
J. A. ZURN MFG. CO.
发明人
PONTIUS PAUL E.
分类号
F16K37/00
主分类号
F16K37/00
代理机构
代理人
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