KR910001785U - Breakdown of public telephones and publicity broadcasting equipment - Google Patents

Breakdown of public telephones and publicity broadcasting equipment

Info

Publication number
KR910001785U
KR910001785U KR2019890007723U KR890007723U KR910001785U KR 910001785 U KR910001785 U KR 910001785U KR 2019890007723 U KR2019890007723 U KR 2019890007723U KR 890007723 U KR890007723 U KR 890007723U KR 910001785 U KR910001785 U KR 910001785U
Authority
KR
South Korea
Prior art keywords
breakdown
broadcasting equipment
public telephones
publicity
publicity broadcasting
Prior art date
Application number
KR2019890007723U
Other languages
Korean (ko)
Other versions
KR920001281Y1 (en
Inventor
조흥래
Original Assignee
조흥래
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 조흥래 filed Critical 조흥래
Priority to KR2019890007723U priority Critical patent/KR920001281Y1/en
Publication of KR910001785U publication Critical patent/KR910001785U/en
Application granted granted Critical
Publication of KR920001281Y1 publication Critical patent/KR920001281Y1/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/023—Circuit arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/24—Arrangements for testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Prepayment Telephone Systems (AREA)
KR2019890007723U 1989-06-02 1989-06-02 Public telephone disorder announcement system KR920001281Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019890007723U KR920001281Y1 (en) 1989-06-02 1989-06-02 Public telephone disorder announcement system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019890007723U KR920001281Y1 (en) 1989-06-02 1989-06-02 Public telephone disorder announcement system

Publications (2)

Publication Number Publication Date
KR910001785U true KR910001785U (en) 1991-01-25
KR920001281Y1 KR920001281Y1 (en) 1992-02-20

Family

ID=19286821

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019890007723U KR920001281Y1 (en) 1989-06-02 1989-06-02 Public telephone disorder announcement system

Country Status (1)

Country Link
KR (1) KR920001281Y1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100642470B1 (en) * 1999-12-29 2006-11-02 주식회사 케이티 Apparatus and method for broadcasting of advertisement and hindrance using public telephone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100642470B1 (en) * 1999-12-29 2006-11-02 주식회사 케이티 Apparatus and method for broadcasting of advertisement and hindrance using public telephone

Also Published As

Publication number Publication date
KR920001281Y1 (en) 1992-02-20

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Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
NORF Unpaid initial registration fee