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发明名称
Draft rigging
摘要
申请公布号
US2546486(A)
申请公布日期
1951.03.27
申请号
US19460712749
申请日期
1946.11.29
申请人
NATIONAL MALLEABLE AND STEEL CASTINGS COMPANY
发明人
WILLISON DONALD
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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