KR920005401Y1 - 전화기 - Google Patents

전화기 Download PDF

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Publication number
KR920005401Y1
KR920005401Y1 KR2019860006820U KR860006820U KR920005401Y1 KR 920005401 Y1 KR920005401 Y1 KR 920005401Y1 KR 2019860006820 U KR2019860006820 U KR 2019860006820U KR 860006820 U KR860006820 U KR 860006820U KR 920005401 Y1 KR920005401 Y1 KR 920005401Y1
Authority
KR
South Korea
Prior art keywords
telephone
transistor
telephones
switch
line
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.)
Expired
Application number
KR2019860006820U
Other languages
English (en)
Korean (ko)
Other versions
KR870001329U (ko
Inventor
요시노모 나까노
기요시 야마노우찌
Original Assignee
쏘니 가부시기가이샤
오오가 노리오
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 쏘니 가부시기가이샤, 오오가 노리오 filed Critical 쏘니 가부시기가이샤
Publication of KR870001329U publication Critical patent/KR870001329U/ko
Application granted granted Critical
Publication of KR920005401Y1 publication Critical patent/KR920005401Y1/ko
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/68—Circuit arrangements for preventing eavesdropping

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
KR2019860006820U 1985-06-21 1986-05-17 전화기 Expired KR920005401Y1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP85-94329 1985-06-21
JP1985094329U JPS623151U (enExample) 1985-06-21 1985-06-21

Publications (2)

Publication Number Publication Date
KR870001329U KR870001329U (ko) 1987-02-20
KR920005401Y1 true KR920005401Y1 (ko) 1992-08-08

Family

ID=14107238

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019860006820U Expired KR920005401Y1 (ko) 1985-06-21 1986-05-17 전화기

Country Status (2)

Country Link
JP (1) JPS623151U (enExample)
KR (1) KR920005401Y1 (enExample)

Also Published As

Publication number Publication date
JPS623151U (enExample) 1987-01-09
KR870001329U (ko) 1987-02-20

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