METHOD OF MAKING INNER ANNULAR GROOVES ON INNER SURFACES OF TUBULAR THERMOPLASTIC PLASTIC WORKPIECES AND APPARATUS THEREFOR,申请号PL19870267241-传众专利搜索

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发明名称	METHOD OF MAKING INNER ANNULAR GROOVES ON INNER SURFACES OF TUBULAR THERMOPLASTIC PLASTIC WORKPIECES AND APPARATUS THEREFOR
摘要
申请公布号	PL152823(B1)	申请公布日期	1991.02.28
申请号	PL19870267241	申请日期	1987.08.05
申请人		发明人
分类号	B29C;B29C57/02;(IPC1-7):B29C57/02	主分类号	B29C
代理机构		代理人
主权项
地址

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