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发明名称
Drop-bottom gondola car door
摘要
申请公布号
US2554427(A)
申请公布日期
1951.05.22
申请号
US19460712089
申请日期
1946.11.25
申请人
STANDARD RAILWAY EQUIPMENT MANUFACTURING COMPANY
发明人
SWANN JAMES S.
分类号
B61D7/18
主分类号
B61D7/18
代理机构
代理人
主权项
地址
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