Pipe coating coupler,申请号US19400331849-传众专利搜索

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发明名称	Pipe coating coupler
摘要
申请公布号	US2287827(A)	申请公布日期	1942.06.30
申请号	US19400331849	申请日期	1940.04.26
申请人	STANDARD OIL COMPANY OF CALIFORNIA	发明人	POSTLEWAITE WILLIAM R.
分类号	B21D39/04;F16B7/18	主分类号	B21D39/04
代理机构		代理人
主权项
地址

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