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JPS54123819A - Under soil or water signal transmitter - Google Patents

Under soil or water signal transmitter

Info

Publication number
JPS54123819A
JPS54123819A JP2995578A JP2995578A JPS54123819A JP S54123819 A JPS54123819 A JP S54123819A JP 2995578 A JP2995578 A JP 2995578A JP 2995578 A JP2995578 A JP 2995578A JP S54123819 A JPS54123819 A JP S54123819A
Authority
JP
Japan
Prior art keywords
signal transmitter
water signal
under soil
soil
under
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2995578A
Other languages
Japanese (ja)
Inventor
Kiyoshi Takizawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP2995578A priority Critical patent/JPS54123819A/en
Publication of JPS54123819A publication Critical patent/JPS54123819A/en
Pending legal-status Critical Current

Links

Landscapes

  • Near-Field Transmission Systems (AREA)
JP2995578A 1978-03-17 1978-03-17 Under soil or water signal transmitter Pending JPS54123819A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2995578A JPS54123819A (en) 1978-03-17 1978-03-17 Under soil or water signal transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2995578A JPS54123819A (en) 1978-03-17 1978-03-17 Under soil or water signal transmitter

Publications (1)

Publication Number Publication Date
JPS54123819A true JPS54123819A (en) 1979-09-26

Family

ID=12290396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2995578A Pending JPS54123819A (en) 1978-03-17 1978-03-17 Under soil or water signal transmitter

Country Status (1)

Country Link
JP (1) JPS54123819A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62112226U (en) * 1985-12-27 1987-07-17
JPS63194425A (en) * 1987-01-22 1988-08-11 オウトクンプ　オイ Two-way communication device for underground facilities

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62112226U (en) * 1985-12-27 1987-07-17
JPS63194425A (en) * 1987-01-22 1988-08-11 オウトクンプ　オイ Two-way communication device for underground facilities

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