BE456214A - - Google Patents
Info
- Publication number
- BE456214A BE456214A BE456214DA BE456214A BE 456214 A BE456214 A BE 456214A BE 456214D A BE456214D A BE 456214DA BE 456214 A BE456214 A BE 456214A
- 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
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
- H04Q1/4465—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency the same frequency being used for all signalling information, e.g. A.C. nr.9 system
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH903678X | 1943-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE456214A true BE456214A (nl) |
Family
ID=4546750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE456214D BE456214A (nl) | 1943-03-04 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE456214A (nl) |
| CH (1) | CH232244A (nl) |
| FR (1) | FR903678A (nl) |
-
0
- BE BE456214D patent/BE456214A/xx unknown
-
1943
- 1943-03-04 CH CH232244D patent/CH232244A/de unknown
-
1944
- 1944-04-26 FR FR903678D patent/FR903678A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH232244A (de) | 1944-05-15 |
| FR903678A (fr) | 1945-10-11 |