A device for indicating the number of hours worked by a person,申请号GB19450022540-传众专利搜索

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发明名称	A device for indicating the number of hours worked by a person
摘要
申请公布号	GB598407(A)	申请公布日期	1948.02.18
申请号	GB19450022540	申请日期	1945.09.01
申请人	LIONEL SKINNER	发明人
分类号	G06G1/00	主分类号	G06G1/00
代理机构		代理人
主权项
地址

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