Device for trapping waste outlets,申请号US19390296773-传众专利搜索

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发明名称	Device for trapping waste outlets
摘要
申请公布号	US2256758(A)	申请公布日期	1941.09.23
申请号	US19390296773	申请日期	1939.09.27
申请人	JOHN B. PIERCE FOUNDATION	发明人	GROENIGER WILLIAM C.
分类号	E03C1/284	主分类号	E03C1/284
代理机构		代理人
主权项
地址

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