BE364131A - - Google Patents
Info
- Publication number
- BE364131A BE364131A BE364131DA BE364131A BE 364131 A BE364131 A BE 364131A BE 364131D A BE364131D A BE 364131DA BE 364131 A BE364131 A BE 364131A
- 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)
- Relay Circuits (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3435528A GB325577A (en) | 1928-11-22 | 1928-11-22 | Improvements in circuit arrangements for alternating current relays with vibratory contacts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE364131A true BE364131A (it) |
Family
ID=10364607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE364131D BE364131A (it) | 1928-11-22 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE364131A (it) |
| GB (1) | GB325577A (it) |
-
0
- BE BE364131D patent/BE364131A/xx unknown
-
1928
- 1928-11-22 GB GB3435528A patent/GB325577A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB325577A (en) | 1930-02-24 |