Underground piping,申请号US19410415581-传众专利搜索

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发明名称	Underground piping
摘要
申请公布号	US2351642(A)	申请公布日期	1944.06.20
申请号	US19410415581	申请日期	1941.10.18
申请人	STARRET HOWARD A	发明人	STARRET HOWARD A.
分类号	F16L55/00;F16L55/04	主分类号	F16L55/00
代理机构		代理人
主权项
地址

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