BE430561A - - Google Patents
Info
- Publication number
- BE430561A BE430561A BE430561DA BE430561A BE 430561 A BE430561 A BE 430561A BE 430561D A BE430561D A BE 430561DA BE 430561 A BE430561 A BE 430561A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEA84454D DE745091C (de) | 1937-10-09 | 1937-10-09 | Schaltungsanordnung fuer den Hochfrequenznachrichtenverkehr |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE430561A true BE430561A (forum.php) | 1938-11-30 |
Family
ID=6949189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE430561D BE430561A (forum.php) | 1937-10-09 | 1938-10-08 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE430561A (forum.php) |
| DE (1) | DE745091C (forum.php) |
| FR (1) | FR844397A (forum.php) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1053360B (de) * | 1951-02-26 | 1959-03-19 | Int Standard Electric Corp | Fernsteuer- und UEberwachungssystem |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE452547C (de) * | 1924-09-13 | 1927-11-12 | Deutsche Telephonwerk Kabel | Schaltungsanordnung zum Verkehr mehrerer Sprechstellen ueber eine gemeinsame Leitung mit Hochfrequenz |
| US2040471A (en) * | 1934-05-26 | 1936-05-12 | American Telephone & Telegraph | Selective signaling system |
-
1937
- 1937-10-09 DE DEA84454D patent/DE745091C/de not_active Expired
-
1938
- 1938-10-07 FR FR844397D patent/FR844397A/fr not_active Expired
- 1938-10-08 BE BE430561D patent/BE430561A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE745091C (de) | 1944-02-25 |
| FR844397A (fr) | 1939-07-24 |