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发明名称
Draft rigging
摘要
申请公布号
US1843860(A)
申请公布日期
1932.02.02
申请号
US19250072304
申请日期
1925.11.30
申请人
THE SYMINGTON COMPANY
发明人
BARROWS DONALD S.
分类号
B61G9/22
主分类号
B61G9/22
代理机构
代理人
主权项
地址
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