Improvements in or relating to manhole hatch or the like covers,申请号GB19410005445-传众专利搜索

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发明名称	Improvements in or relating to manhole hatch or the like covers
摘要
申请公布号	GB546421(A)	申请公布日期	1942.07.13
申请号	GB19410005445	申请日期	1941.04.28
申请人	JOE WESTOBY;THE HUMBER SHIPWRIGHT COMPANY LIMITED	发明人
分类号	B63B19/14	主分类号	B63B19/14
代理机构		代理人
主权项
地址

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