BE448203A - - Google Patents
Info
- Publication number
- BE448203A BE448203A BE448203DA BE448203A BE 448203 A BE448203 A BE 448203A BE 448203D A BE448203D A BE 448203DA BE 448203 A BE448203 A BE 448203A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/14—Arrangements providing for calling or supervisory signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/544—Setting up communications; Call and signalling arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Interface Circuits In Exchanges (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE242253X | 1941-10-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE448203A true BE448203A (en:Method) |
Family
ID=5915110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE448203D BE448203A (en:Method) | 1941-10-24 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE448203A (en:Method) |
| CH (1) | CH242253A (en:Method) |
| DE (1) | DE866673C (en:Method) |
| ES (1) | ES158348A1 (en:Method) |
| FR (2) | FR894067A (en:Method) |
-
0
- BE BE448203D patent/BE448203A/xx unknown
-
1941
- 1941-12-03 DE DES16074D patent/DE866673C/de not_active Expired
-
1942
- 1942-08-22 ES ES0158348A patent/ES158348A1/es not_active Expired
- 1942-10-21 CH CH242253D patent/CH242253A/de unknown
-
1943
- 1943-04-17 FR FR894067D patent/FR894067A/fr not_active Expired
- 1943-05-07 FR FR52936D patent/FR52936E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR52936E (fr) | 1945-08-24 |
| ES158348A1 (es) | 1943-03-01 |
| DE866673C (de) | 1953-02-12 |
| FR894067A (fr) | 1944-12-13 |
| CH242253A (de) | 1946-04-30 |