Pressure-controlling valve,申请号US19270163628-传众专利搜索

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发明名称	Pressure-controlling valve
摘要
申请公布号	US1799211(A)	申请公布日期	1931.04.07
申请号	US19270163628	申请日期	1927.01.26
申请人	BROOKS ROBERT A	发明人	BROOKS ROBERT A.
分类号	G05D16/10	主分类号	G05D16/10
代理机构		代理人
主权项
地址

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