BG22359A1 - - Google Patents
Info
- Publication number
- BG22359A1 BG22359A1 BG1613070A BG1613070A BG22359A1 BG 22359 A1 BG22359 A1 BG 22359A1 BG 1613070 A BG1613070 A BG 1613070A BG 1613070 A BG1613070 A BG 1613070A BG 22359 A1 BG22359 A1 BG 22359A1
- Authority
- BG
- Bulgaria
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD14701370 | 1970-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG22359A1 true BG22359A1 (https=) | 1977-02-20 |
Family
ID=5482420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG1613070A BG22359A1 (https=) | 1970-04-22 | 1970-11-24 |
Country Status (4)
| Country | Link |
|---|---|
| BG (1) | BG22359A1 (https=) |
| CS (1) | CS168109B1 (https=) |
| DE (1) | DE2052427A1 (https=) |
| HU (1) | HU163724B (https=) |
-
1970
- 1970-10-26 DE DE19702052427 patent/DE2052427A1/de active Pending
- 1970-11-24 BG BG1613070A patent/BG22359A1/xx unknown
-
1971
- 1971-04-01 CS CS235871A patent/CS168109B1/cs unknown
- 1971-04-22 HU HUII000048 patent/HU163724B/hu unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2052427A1 (de) | 1971-11-11 |
| CS168109B1 (https=) | 1976-05-28 |
| HU163724B (https=) | 1973-10-27 |