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发明名称
Draft gear
摘要
申请公布号
US2121833(A)
申请公布日期
1938.06.28
申请号
US19340705259
申请日期
1934.01.04
申请人
CARDWELL-WESTINGHOUSE COMPANY
发明人
SPROUL DONALD F.
分类号
B61G9/10
主分类号
B61G9/10
代理机构
代理人
主权项
地址
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