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发明名称
Metal car roof
摘要
申请公布号
US1803321(A)
申请公布日期
1931.05.05
申请号
US19290331373
申请日期
1929.01.09
申请人
THE YOUNGSTOWN STEEL DOOR COMPANY
发明人
DITCHFIELD FRANK
分类号
B61D17/12
主分类号
B61D17/12
代理机构
代理人
主权项
地址
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