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发明名称
Catapult device
摘要
申请公布号
US2970839(A)
申请公布日期
1961.02.07
申请号
US19580741624
申请日期
1958.06.12
申请人
HALVERSON EMMETT H
发明人
HALVERSON EMMETT H.
分类号
F41B3/02
主分类号
F41B3/02
代理机构
代理人
主权项
地址
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