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经营范围
发明名称
Teaching aid
摘要
申请公布号
US3190014(A)
申请公布日期
1965.06.22
申请号
US19640356697
申请日期
1964.03.31
申请人
AIRCRAFT ARMAMENTS, INC.
发明人
RHODES WILLIAM H.
分类号
G09B7/073
主分类号
G09B7/073
代理机构
代理人
主权项
地址
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