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发明名称
Draft rigging
摘要
申请公布号
US1934030(A)
申请公布日期
1933.11.07
申请号
US19300493413
申请日期
1930.11.04
申请人
THE SYMINGTON COMPANY
发明人
BARROWS DONALD S.
分类号
B61G9/24
主分类号
B61G9/24
代理机构
代理人
主权项
地址
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