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发明名称
Floor structure for railway freight cars
摘要
申请公布号
US2587754(A)
申请公布日期
1952.03.04
申请号
US19500175218
申请日期
1950.07.21
申请人
OSBORN HOWARD E
发明人
OSBORN HOWARD E.
分类号
B61D17/10
主分类号
B61D17/10
代理机构
代理人
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