Improved precision depth gauge,申请号GB19420013902-传众专利搜索

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发明名称	Improved precision depth gauge
摘要
申请公布号	GB560474(A)	申请公布日期	1944.04.05
申请号	GB19420013902	申请日期	1942.10.03
申请人	SYDNEY JOHN PARKER	发明人
分类号	G01B3/28	主分类号	G01B3/28
代理机构		代理人
主权项
地址

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