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发明名称
Phase-difference control for electroacoustic steering systems
摘要
申请公布号
US3024754(A)
申请公布日期
1962.03.13
申请号
US19500166286
申请日期
1950.06.05
申请人
发明人
GARDINER PAUL COOKE
分类号
F41G7/00;F42B19/10
主分类号
F41G7/00
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代理人
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