NL281416A - - Google Patents
Info
- Publication number
- NL281416A NL281416A NL281416DA NL281416A NL 281416 A NL281416 A NL 281416A NL 281416D A NL281416D A NL 281416DA NL 281416 A NL281416 A NL 281416A
- Authority
- NL
- Netherlands
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)
- Telephonic Communication Services (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEST18123A DE1136385B (de) | 1961-07-26 | 1961-07-26 | Empfangseinrichtung fuer Frequenz-Codesignale in Fernmelde-, insbesondere Fernsprechanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL281416A true NL281416A (nl) |
Family
ID=7457726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL281416D NL281416A (nl) | 1961-07-26 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE619968A (nl) |
| DE (1) | DE1136385B (nl) |
| NL (1) | NL281416A (nl) |
-
0
- NL NL281416D patent/NL281416A/xx unknown
-
1961
- 1961-07-26 DE DEST18123A patent/DE1136385B/de active Pending
-
1962
- 1962-07-10 BE BE619968A patent/BE619968A/nl unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE619968A (nl) | 1963-01-10 |
| DE1136385B (de) | 1962-09-13 |