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经营范围
发明名称
Railroad car cushioning mechanism
摘要
申请公布号
US2915198(A)
申请公布日期
1959.12.01
申请号
US19550501027
申请日期
1955.04.13
申请人
SPENCER OLIVER E
发明人
SPENCER OLIVER E.
分类号
B61G9/08
主分类号
B61G9/08
代理机构
代理人
主权项
地址
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