BE477086A - - Google Patents
Info
- Publication number
- BE477086A BE477086A BE477086DA BE477086A BE 477086 A BE477086 A BE 477086A BE 477086D A BE477086D A BE 477086DA BE 477086 A BE477086 A BE 477086A
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2795247A GB630408A (en) | 1946-11-02 | 1946-11-02 | Improvements in or relating to telephone systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE477086A true BE477086A (en:Method) |
Family
ID=10267909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE477086D BE477086A (en:Method) | 1946-11-02 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE477086A (en:Method) |
| GB (1) | GB630408A (en:Method) |
-
0
- BE BE477086D patent/BE477086A/xx unknown
-
1946
- 1946-11-02 GB GB2795247A patent/GB630408A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB630408A (en) | 1949-10-12 |