Improvements in or relating to gags for holding the human mouth open,申请号GB19290039159-传众专利搜索

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发明名称	Improvements in or relating to gags for holding the human mouth open
摘要
申请公布号	GB341682(A)	申请公布日期	1931.01.22
申请号	GB19290039159	申请日期	1929.12.21
申请人	JOHN PHILIP COLMAN;JOHN RILEY;ARTHUR RILEY	发明人
分类号	A61B1/24	主分类号	A61B1/24
代理机构		代理人
主权项
地址

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