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发明名称
Ultrasonic transmitter
摘要
申请公布号
US3017849(A)
申请公布日期
1962.01.23
申请号
US19590820003
申请日期
1959.06.12
申请人
ZENITH RADIO CORPORATION
发明人
GROSSENHEIDER HOWARD
分类号
G10K1/07
主分类号
G10K1/07
代理机构
代理人
主权项
地址
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