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发明名称
Line changing reel
摘要
申请公布号
US1804585(A)
申请公布日期
1931.05.12
申请号
US19280313119
申请日期
1928.10.17
申请人
BARNER LAWRENCE D;OTTO SHELANDER GUS
发明人
BARNER LAWRENCE D.;SHELANDER GUS OTTO
分类号
E21B19/00
主分类号
E21B19/00
代理机构
代理人
主权项
地址
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