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发明名称
Double swing
摘要
申请公布号
US2580920(A)
申请公布日期
1952.01.01
申请号
US19460706411
申请日期
1946.10.29
申请人
HUNT MELVIN W
发明人
HUNT MELVIN W.
分类号
A63G9/00;A63G9/16
主分类号
A63G9/00
代理机构
代理人
主权项
地址
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