JPS5781753A - Improved double-telephone device - Google Patents

Improved double-telephone device

Info

Publication number
JPS5781753A
JPS5781753A JP55137439A JP13743980A JPS5781753A JP S5781753 A JPS5781753 A JP S5781753A JP 55137439 A JP55137439 A JP 55137439A JP 13743980 A JP13743980 A JP 13743980A JP S5781753 A JPS5781753 A JP S5781753A
Authority
JP
Japan
Prior art keywords
telephone
button
operated
call
additional device
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.)
Granted
Application number
JP55137439A
Other languages
English (en)
Japanese (ja)
Other versions
JPH029742B2 (enrdf_load_stackoverflow
Inventor
Akinobu Sekiguchi
Tokuji Yamada
Minoru Sasai
Yoshio Nagasaki
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.)
Nippon Telegraph and Telephone Corp
Kanda Tsushin Kogyo Co Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
Kanda Tsushin Kogyo Co Ltd
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 Nippon Telegraph and Telephone Corp, Kanda Tsushin Kogyo Co Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55137439A priority Critical patent/JPS5781753A/ja
Publication of JPS5781753A publication Critical patent/JPS5781753A/ja
Publication of JPH029742B2 publication Critical patent/JPH029742B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
JP55137439A 1980-10-01 1980-10-01 Improved double-telephone device Granted JPS5781753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55137439A JPS5781753A (en) 1980-10-01 1980-10-01 Improved double-telephone device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55137439A JPS5781753A (en) 1980-10-01 1980-10-01 Improved double-telephone device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP51037307A Division JPS597254B2 (ja) 1976-04-05 1976-04-05 改良形親子電話装置

Publications (2)

Publication Number Publication Date
JPS5781753A true JPS5781753A (en) 1982-05-21
JPH029742B2 JPH029742B2 (enrdf_load_stackoverflow) 1990-03-05

Family

ID=15198644

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55137439A Granted JPS5781753A (en) 1980-10-01 1980-10-01 Improved double-telephone device

Country Status (1)

Country Link
JP (1) JPS5781753A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000059193A (ja) * 1998-08-05 2000-02-25 Hakusan Mfg Co Ltd 複合形小電流スイッチ回路

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03244950A (ja) * 1990-02-20 1991-10-31 Mitsubishi Electric Corp レンジフード
JPH04106444U (ja) * 1991-02-28 1992-09-14 富士工業株式会社 レンジフード

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000059193A (ja) * 1998-08-05 2000-02-25 Hakusan Mfg Co Ltd 複合形小電流スイッチ回路

Also Published As

Publication number Publication date
JPH029742B2 (enrdf_load_stackoverflow) 1990-03-05

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