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发明名称
Diaphragm operated valve with frictionless seal between diaphragm mechanism and valve
摘要
申请公布号
US2623543(A)
申请公布日期
1952.12.30
申请号
US19490105436
申请日期
1949.07.18
申请人
HEINISCH WILLIAM F
发明人
HEINISCH WILLIAM F.
分类号
F16K31/363
主分类号
F16K31/363
代理机构
代理人
主权项
地址
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