Preformed bands with lingual extensions,申请号US19870116671-传众专利搜索

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发明名称	Preformed bands with lingual extensions
摘要
申请公布号	US4856992(A)	申请公布日期	1989.08.15
申请号	US19870116671	申请日期	1987.11.04
申请人	BERGERSEN, EARL O.	发明人	BERGERSEN, EARL O.
分类号	A61C7/00;A61C7/12	主分类号	A61C7/00
代理机构		代理人
主权项
地址

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