Trapdoor and step control mechanism for passenger cars,申请号US19290405794-传众专利搜索

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发明名称	Trapdoor and step control mechanism for passenger cars
摘要
申请公布号	US1802926(A)	申请公布日期	1931.04.28
申请号	US19290405794	申请日期	1929.11.08
申请人	NATIONAL PNEUMATIC COMPANY	发明人	PAUL ABRAM FRANK
分类号	B61D23/02	主分类号	B61D23/02
代理机构		代理人
主权项
地址

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