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发明名称
Blast-proof water-proof loudspeaker
摘要
申请公布号
US3073916(A)
申请公布日期
1963.01.15
申请号
US19580775798
申请日期
1958.11.24
申请人
THE MUTER COMPANY
发明人
WILLIAMS PHILIP B.;ALLEN HARRY E.;HOHMANN CHARLES R.
分类号
H04R9/04;H04R9/06
主分类号
H04R9/04
代理机构
代理人
主权项
地址
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