Title:
UNDER SOIL OR WATER SIGNAL TRANSMITTER
Document Type and Number:
Japanese Patent JPS54123819
Kind Code:
A
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Inventors:
TAKIZAWA KIYOSHI
Application Number:
JP2995578A
Publication Date:
September 26, 1979
Filing Date:
March 17, 1978
Export Citation:
Assignee:
TAKIZAWA KIYOSHI
International Classes:
H04B13/00; H04B13/02; H04B5/00; (IPC1-7): H04B5/00; H04B13/02