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发明名称
Air-volume control device for a water supply system
摘要
申请公布号
GB648549(A)
申请公布日期
1951.01.10
申请号
GB19480007123
申请日期
1948.03.08
申请人
FRANCIS ELMER BRADY, JR.
发明人
分类号
G05D9/04;G05D16/10
主分类号
G05D9/04
代理机构
代理人
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地址
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