Saliva bowl guard,申请号US19500199081-传众专利搜索

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发明名称	Saliva bowl guard
摘要
申请公布号	US2644956(A)	申请公布日期	1953.07.14
申请号	US19500199081	申请日期	1950.12.04
申请人	OERTEL CARL H	发明人	OERTEL CARL H.
分类号	A61C17/14	主分类号	A61C17/14
代理机构		代理人
主权项
地址

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