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发明名称
Submarine signaling
摘要
申请公布号
US1784137(A)
申请公布日期
1930.12.09
申请号
US19250031873
申请日期
1925.05.21
申请人
SUBMARINE SIGNAL CORPORATION
发明人
FAY RICHARD DUDLEY;DORSEY HERBERT GROVE
分类号
G01S1/72
主分类号
G01S1/72
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代理人
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