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发明名称
UNDERWATER TELEPHONE
摘要
申请公布号
GB1442595(A)
申请公布日期
1976.07.14
申请号
GB19720032044
申请日期
1972.07.07
申请人
GRASEBY INSTRUMENTS LTD
发明人
分类号
H04B11/00;(IPC1-7):G08C23/00
主分类号
H04B11/00
代理机构
代理人
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地址
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