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发明名称
Pneumatic system for operating flow control valves
摘要
申请公布号
US2630132(A)
申请公布日期
1953.03.03
申请号
US19500187591
申请日期
1950.09.29
申请人
INFILCO INCORPORATED
发明人
HUGHES WALTER J.
分类号
G05D7/03
主分类号
G05D7/03
代理机构
代理人
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地址
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