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发明名称
SUBMARINE SIGNAL DEVICE
摘要
申请公布号
CA447188(A)
申请公布日期
1948.03.09
申请号
CAD447188
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
WILLIAM R. HARRY;FRANK F. ROMANOW
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主分类号
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