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发明名称
Valve assembly
摘要
申请公布号
US1937313(A)
申请公布日期
1933.11.28
申请号
US19330670273
申请日期
1933.05.10
申请人
BROTZ FRANK G
发明人
BROTZ FRANK G.
分类号
F16K1/48
主分类号
F16K1/48
代理机构
代理人
主权项
地址
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