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经营范围
发明名称
Drill round
摘要
申请公布号
US2342549(A)
申请公布日期
1944.02.22
申请号
US19430485216
申请日期
1943.04.30
申请人
NATIONAL FIREWORKS, INC.
发明人
GORE JOHN P. LE;BRANDT FRANCIS L.
分类号
F42B8/08
主分类号
F42B8/08
代理机构
代理人
主权项
地址
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