Leak stop,申请号US19300436808-传众专利搜索

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发明名称	Leak stop
摘要
申请公布号	US1819169(A)	申请公布日期	1931.08.18
申请号	US19300436808	申请日期	1930.03.18
申请人	HILDRETH FRED D	发明人	HILDRETH FRED D.
分类号	F16L55/17	主分类号	F16L55/17
代理机构		代理人
主权项
地址

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