Air ring for use in the manufacture of thermoplastic tubing,申请号US19580736308-传众专利搜索

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发明名称	Air ring for use in the manufacture of thermoplastic tubing
摘要
申请公布号	US2952874(A)	申请公布日期	1960.09.20
申请号	US19580736308	申请日期	1958.05.19
申请人	PHILLIPS PETROLEUM COMPANY	发明人	DOYLE ROBERT
分类号	B29C47/88	主分类号	B29C47/88
代理机构		代理人
主权项
地址

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