Improvements in a method of and a retraction cord for uncovering and draining the preparation limit line of teeth,申请号US19870125317-传众专利搜索

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发明名称	Improvements in a method of and a retraction cord for uncovering and draining the preparation limit line of teeth
摘要
申请公布号	US4871311(A)	申请公布日期	1989.10.03
申请号	US19870125317	申请日期	1987.11.25
申请人	HAGNE, LEIF	发明人	HAGNE, LEIF
分类号	A61C9/00	主分类号	A61C9/00
代理机构		代理人
主权项
地址

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