Valve operating mechanism,申请号US19290382237-传众专利搜索

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发明名称	Valve operating mechanism
摘要
申请公布号	US1833533(A)	申请公布日期	1931.11.24
申请号	US19290382237	申请日期	1929.07.30
申请人	WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY	发明人	RAY JAMES L.
分类号	G05D13/00	主分类号	G05D13/00
代理机构		代理人
主权项
地址

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