KR880020756U - Sidetone prevention circuit - Google Patents
Sidetone prevention circuitInfo
- Publication number
- KR880020756U KR880020756U KR2019870006540U KR870006540U KR880020756U KR 880020756 U KR880020756 U KR 880020756U KR 2019870006540 U KR2019870006540 U KR 2019870006540U KR 870006540 U KR870006540 U KR 870006540U KR 880020756 U KR880020756 U KR 880020756U
- Authority
- KR
- South Korea
- Prior art keywords
- prevention circuit
- sidetone
- sidetone prevention
- circuit
- prevention
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/58—Anti-side-tone circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870006540U KR900002476Y1 (en) | 1987-04-30 | 1987-04-30 | Side-tone preventing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2019870006540U KR900002476Y1 (en) | 1987-04-30 | 1987-04-30 | Side-tone preventing circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
KR880020756U true KR880020756U (en) | 1988-11-30 |
KR900002476Y1 KR900002476Y1 (en) | 1990-03-26 |
Family
ID=19262378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR2019870006540U KR900002476Y1 (en) | 1987-04-30 | 1987-04-30 | Side-tone preventing circuit |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR900002476Y1 (en) |
-
1987
- 1987-04-30 KR KR2019870006540U patent/KR900002476Y1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR900002476Y1 (en) | 1990-03-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
N231 | Notification of change of applicant | ||
E701 | Decision to grant or registration of patent right | ||
REGI | Registration of establishment | ||
FPAY | Annual fee payment |
Payment date: 20010223 Year of fee payment: 12 |
|
LAPS | Lapse due to unpaid annual fee |