JPS5645537B2 - - Google Patents

Info

Publication number
JPS5645537B2
JPS5645537B2 JP15289376A JP15289376A JPS5645537B2 JP S5645537 B2 JPS5645537 B2 JP S5645537B2 JP 15289376 A JP15289376 A JP 15289376A JP 15289376 A JP15289376 A JP 15289376A JP S5645537 B2 JPS5645537 B2 JP S5645537B2
Authority
JP
Japan
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.)
Expired
Application number
JP15289376A
Other versions
JPS5377408A (en
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 filed Critical
Priority to JP15289376A priority Critical patent/JPS5377408A/ja
Publication of JPS5377408A publication Critical patent/JPS5377408A/ja
Publication of JPS5645537B2 publication Critical patent/JPS5645537B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive loop type
JP15289376A 1976-12-21 1976-12-21 Communication unit in tunnel and underground Granted JPS5377408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15289376A JPS5377408A (en) 1976-12-21 1976-12-21 Communication unit in tunnel and underground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15289376A JPS5377408A (en) 1976-12-21 1976-12-21 Communication unit in tunnel and underground

Publications (2)

Publication Number Publication Date
JPS5377408A JPS5377408A (en) 1978-07-08
JPS5645537B2 true JPS5645537B2 (ja) 1981-10-27

Family

ID=15550421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15289376A Granted JPS5377408A (en) 1976-12-21 1976-12-21 Communication unit in tunnel and underground

Country Status (1)

Country Link
JP (1) JPS5377408A (ja)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4020332Y1 (ja) * 1964-11-09 1965-07-15
JPS5042664U (ja) * 1973-08-17 1975-04-30
JPS5158886A (ja) * 1974-11-18 1976-05-22 Matsushita Electric Ind Co Ltd

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4020332Y1 (ja) * 1964-11-09 1965-07-15
JPS5042664U (ja) * 1973-08-17 1975-04-30
JPS5158886A (ja) * 1974-11-18 1976-05-22 Matsushita Electric Ind Co Ltd

Also Published As

Publication number Publication date
JPS5377408A (en) 1978-07-08

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