Bolster construction and ventilation system,申请号US19450599897-传众专利搜索

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发明名称	Bolster construction and ventilation system
摘要
申请公布号	US2463255(A)	申请公布日期	1949.03.01
申请号	US19450599897	申请日期	1945.06.16
申请人	TRANSIT RESEARCH CORPORATION	发明人	ELLIOTT EDWARD
分类号	B61C5/02;B61C17/04	主分类号	B61C5/02
代理机构		代理人
主权项
地址

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