Movable barrier for elevated highways,申请号US19380193879-传众专利搜索

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发明名称	Movable barrier for elevated highways
摘要
申请公布号	US2143433(A)	申请公布日期	1939.01.10
申请号	US19380193879	申请日期	1938.03.04
申请人	CURTIS WALTER T	发明人	CURTIS WALTER T.
分类号	E01F15/00	主分类号	E01F15/00
代理机构		代理人
主权项
地址

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