BE525745A - - Google Patents
Info
- Publication number
- BE525745A BE525745A BE525745DA BE525745A BE 525745 A BE525745 A BE 525745A BE 525745D A BE525745D A BE 525745DA BE 525745 A BE525745 A BE 525745A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM17021A DE967980C (de) | 1953-01-17 | 1953-01-17 | Schaltungsanordnung zur Signalgabe mittels Wechselstrom beliebiger Frequenz |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE525745A true BE525745A (xx) |
Family
ID=27770764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE525745D BE525745A (xx) | 1953-01-17 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE525745A (xx) |
| CH (1) | CH327601A (xx) |
| DE (1) | DE967980C (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1165095B (de) * | 1961-04-26 | 1964-03-12 | Siemens Ag | Schaltungsanordnung zum Empfang von Rueckkennzeichen in Fernmelde-, insbesondere Fernsprechanlagen |
-
0
- BE BE525745D patent/BE525745A/xx unknown
-
1953
- 1953-01-17 DE DEM17021A patent/DE967980C/de not_active Expired
-
1954
- 1954-01-15 CH CH327601D patent/CH327601A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH327601A (de) | 1958-01-31 |
| DE967980C (de) | 1958-01-02 |