Pipe-closure device,申请号US19300496297-传众专利搜索

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发明名称	Pipe-closure device
摘要
申请公布号	US1893993(A)	申请公布日期	1933.01.10
申请号	US19300496297	申请日期	1930.11.17
申请人	AUTOMATIC BURNER CORPORATION	发明人	HIRSCH JACOB H.
分类号	F16L55/115	主分类号	F16L55/115
代理机构		代理人
主权项
地址

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