BE456171A - - Google Patents
Info
- Publication number
- BE456171A BE456171A BE456171DA BE456171A BE 456171 A BE456171 A BE 456171A BE 456171D A BE456171D A BE 456171DA BE 456171 A BE456171 A BE 456171A
- 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
- H04Q1/442—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies
- H04Q1/4423—Signalling arrangements; Manipulation of signalling currents using alternate current with out-of-voice band signalling frequencies using one signalling frequency
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL95350D DE744288C (de) | 1938-08-05 | 1938-08-05 | Verfahren zur Rufuebermittlung in Traegerfrequenzsystemen |
| DEL5395D DE865327C (de) | 1938-08-05 | 1938-08-05 | Anordnung zur Rufuebermittlung in Traegerfrequenzsystemen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE456171A true BE456171A (fr) | 1944-07-31 |
Family
ID=5966306
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE435783D BE435783A (fr) | 1938-08-05 | 1939-08-02 | |
| BE435782D BE435782A (fr) | 1938-08-05 | 1939-08-02 | |
| BE456171D BE456171A (fr) | 1938-08-05 | 1944-06-07 |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE435783D BE435783A (fr) | 1938-08-05 | 1939-08-02 | |
| BE435782D BE435782A (fr) | 1938-08-05 | 1939-08-02 |
Country Status (5)
| Country | Link |
|---|---|
| BE (3) | BE435783A (fr) |
| CH (1) | CH256353A (fr) |
| DE (2) | DE865327C (fr) |
| FR (3) | FR858562A (fr) |
| NL (1) | NL56365C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE482215A (fr) * | 1947-04-29 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB253697A (en) * | 1925-05-20 | 1926-06-24 | Western Electric Co | Improvements in signalling (ringing) arrangements for carrier wave systems |
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1938
- 1938-08-05 DE DEL5395D patent/DE865327C/de not_active Expired
- 1938-08-05 DE DEL95350D patent/DE744288C/de not_active Expired
-
1939
- 1939-08-01 NL NL94589A patent/NL56365C/xx active
- 1939-08-01 FR FR858562D patent/FR858562A/fr not_active Expired
- 1939-08-01 FR FR858561D patent/FR858561A/fr not_active Expired
- 1939-08-02 BE BE435783D patent/BE435783A/xx unknown
- 1939-08-02 BE BE435782D patent/BE435782A/xx unknown
-
1944
- 1944-03-21 CH CH256353D patent/CH256353A/de unknown
- 1944-05-08 FR FR53610D patent/FR53610E/fr not_active Expired
- 1944-06-07 BE BE456171D patent/BE456171A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR53610E (fr) | 1946-06-21 |
| NL56365C (fr) | 1944-06-15 |
| FR858561A (fr) | 1940-11-30 |
| FR858562A (fr) | 1940-11-28 |
| BE435783A (fr) | 1939-09-30 |
| DE865327C (de) | 1953-02-02 |
| DE744288C (de) | 1944-01-13 |
| BE435782A (fr) | 1939-09-30 |
| CH256353A (de) | 1948-08-15 |