JPS55117429A - Safety circuit for telephone subscriber - Google Patents

Safety circuit for telephone subscriber

Info

Publication number
JPS55117429A
JPS55117429A JP2307379A JP2307379A JPS55117429A JP S55117429 A JPS55117429 A JP S55117429A JP 2307379 A JP2307379 A JP 2307379A JP 2307379 A JP2307379 A JP 2307379A JP S55117429 A JPS55117429 A JP S55117429A
Authority
JP
Japan
Prior art keywords
safety circuit
telephone subscriber
subscriber
telephone
safety
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
JP2307379A
Other languages
Japanese (ja)
Inventor
Tsunehisa Toukawa
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.)
SHIROYAMA SEISAKUSHO KK
Original Assignee
SHIROYAMA SEISAKUSHO KK
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 SHIROYAMA SEISAKUSHO KK filed Critical SHIROYAMA SEISAKUSHO KK
Priority to JP2307379A priority Critical patent/JPS55117429A/en
Publication of JPS55117429A publication Critical patent/JPS55117429A/en
Pending legal-status Critical Current

Links

Landscapes

  • Emergency Protection Circuit Devices (AREA)
JP2307379A 1979-02-28 1979-02-28 Safety circuit for telephone subscriber Pending JPS55117429A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2307379A JPS55117429A (en) 1979-02-28 1979-02-28 Safety circuit for telephone subscriber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2307379A JPS55117429A (en) 1979-02-28 1979-02-28 Safety circuit for telephone subscriber

Publications (1)

Publication Number Publication Date
JPS55117429A true JPS55117429A (en) 1980-09-09

Family

ID=12100219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2307379A Pending JPS55117429A (en) 1979-02-28 1979-02-28 Safety circuit for telephone subscriber

Country Status (1)

Country Link
JP (1) JPS55117429A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778322A (en) * 1980-10-31 1982-05-17 Nippon Telegraph & Telephone Safety circuit for telephone subscriber
WO2005093923A1 (en) * 2004-03-26 2005-10-06 Otowa Electric Co. Ltd. Surge absorber and surge absorbing circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926727A (en) * 1972-07-05 1974-03-09
JPS4929915A (en) * 1972-07-19 1974-03-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4926727A (en) * 1972-07-05 1974-03-09
JPS4929915A (en) * 1972-07-19 1974-03-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5778322A (en) * 1980-10-31 1982-05-17 Nippon Telegraph & Telephone Safety circuit for telephone subscriber
JPS6258221B2 (en) * 1980-10-31 1987-12-04 Nippon Denshin Denwa Kk
WO2005093923A1 (en) * 2004-03-26 2005-10-06 Otowa Electric Co. Ltd. Surge absorber and surge absorbing circuit

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