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发明名称
Ladder for railroad cars
摘要
申请公布号
US2502228(A)
申请公布日期
1950.03.28
申请号
US19460675744
申请日期
1946.06.10
申请人
LEE MILLER GEORGE
发明人
MILLER GEORGE LEE
分类号
B61D23/00
主分类号
B61D23/00
代理机构
代理人
主权项
地址
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