Valve operating mechanism,申请号US19410386104-传众专利搜索

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发明名称	Valve operating mechanism
摘要
申请公布号	US2249953(A)	申请公布日期	1941.07.22
申请号	US19410386104	申请日期	1941.03.31
申请人	GRAHAM BENJAMIN O	发明人	GRAHAM BENJAMIN O.
分类号	E03D5/092	主分类号	E03D5/092
代理机构		代理人
主权项
地址

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