BE482465A - - Google Patents
Info
- Publication number
- BE482465A BE482465A BE482465DA BE482465A BE 482465 A BE482465 A BE 482465A BE 482465D A BE482465D A BE 482465DA BE 482465 A BE482465 A BE 482465A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/40—Applications of speech amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1145447A GB633112A (en) | 1947-04-29 | 1947-04-29 | Improvements in or relating to telecommunication exchange systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE482465A true BE482465A (en:Method) |
Family
ID=9986554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE482465D BE482465A (en:Method) | 1947-04-29 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE482465A (en:Method) |
| GB (1) | GB633112A (en:Method) |
-
0
- BE BE482465D patent/BE482465A/xx unknown
-
1947
- 1947-04-29 GB GB1145447A patent/GB633112A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB633112A (en) | 1949-12-12 |