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发明名称
Draft gear
摘要
申请公布号
US1909380(A)
申请公布日期
1933.05.16
申请号
US19300495572
申请日期
1930.11.14
申请人
NATIONAL MALLEABLE AND STEEL CASTINGS COMPANY
发明人
SCHMIDT ERNEST H.
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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