BE709268A - - Google Patents
Info
- Publication number
- BE709268A BE709268A BE709268DA BE709268A BE 709268 A BE709268 A BE 709268A BE 709268D A BE709268D A BE 709268DA BE 709268 A BE709268 A BE 709268A
- 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
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6700623A NL6700623A (bg) | 1967-01-13 | 1967-01-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE709268A true BE709268A (bg) | 1968-07-12 |
Family
ID=19798990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE709268D BE709268A (bg) | 1967-01-13 | 1968-01-12 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE709268A (bg) |
| DE (1) | DE1562117A1 (bg) |
| NL (1) | NL6700623A (bg) |
-
1967
- 1967-01-13 NL NL6700623A patent/NL6700623A/xx unknown
-
1968
- 1968-01-09 DE DE19681562117 patent/DE1562117A1/de active Pending
- 1968-01-12 BE BE709268D patent/BE709268A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL6700623A (bg) | 1968-07-15 |
| DE1562117A1 (de) | 1970-03-12 |