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发明名称
Proportional valve
摘要
申请公布号
US2962593(A)
申请公布日期
1960.11.29
申请号
US19570694421
申请日期
1957.11.04
申请人
TRACERLAB, INC.
发明人
THOMAS ALEXANDER
分类号
G05D16/18
主分类号
G05D16/18
代理机构
代理人
主权项
地址
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