Improvements in overpasses,申请号GB19670006721-传众专利搜索

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发明名称	Improvements in overpasses
摘要
申请公布号	GB1120496(A)	申请公布日期	1968.07.17
申请号	GB19670006721	申请日期	1967.02.13
申请人	WILLIAM WILKINS PLEASANTS	发明人
分类号	E01D1/00;E01D19/10	主分类号	E01D1/00
代理机构		代理人
主权项
地址

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