Gas main stopper,申请号US19300495459-传众专利搜索

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发明名称	Gas main stopper
摘要
申请公布号	US1889621(A)	申请公布日期	1932.11.29
申请号	US19300495459	申请日期	1930.11.13
申请人	ANKARLO GEORGE S	发明人	ANKARLO GEORGE S.
分类号	F16L55/124	主分类号	F16L55/124
代理机构		代理人
主权项
地址

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