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发明名称
UNDER SOIL OR WATER SIGNAL TRANSMITTER
摘要
申请公布号
JPS54123819(A)
申请公布日期
1979.09.26
申请号
JP19780029955
申请日期
1978.03.17
申请人
TAKIZAWA KIYOSHI
发明人
TAKIZAWA KIYOSHI
分类号
H04B5/00;H04B13/00;H04B13/02
主分类号
H04B5/00
代理机构
代理人
主权项
地址
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