Improvements in hand-operated indicating devices,申请号GB19380031337-传众专利搜索

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发明名称	Improvements in hand-operated indicating devices
摘要
申请公布号	GB513617(A)	申请公布日期	1939.10.17
申请号	GB19380031337	申请日期	1938.10.29
申请人	JOHN CARL EHRLICH	发明人
分类号	A61J7/04	主分类号	A61J7/04
代理机构		代理人
主权项
地址

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