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发明名称
Spring plankless car truck
摘要
申请公布号
US2429399(A)
申请公布日期
1947.10.21
申请号
US19440517164
申请日期
1944.01.06
申请人
AMERICAN STEEL FOUNDRIES
发明人
COTTRELL ROBERT B.
分类号
B61F5/12
主分类号
B61F5/12
代理机构
代理人
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地址
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