KR910001785U - Breakdown of public telephones and publicity broadcasting equipment - Google Patents
Breakdown of public telephones and publicity broadcasting equipmentInfo
- 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
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)
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)
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 |
-
1989
- 1989-06-02 KR KR2019890007723U patent/KR920001281Y1/en active IP Right Grant
Cited By (1)
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 |