NL268829A - - Google Patents
Info
- Publication number
- NL268829A NL268829A NL268829DA NL268829A NL 268829 A NL268829 A NL 268829A NL 268829D A NL268829D A NL 268829DA NL 268829 A NL268829 A NL 268829A
- 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)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1195365XA | 1960-10-03 | 1960-10-03 | |
| US5996260A | 1960-10-03 | 1960-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL268829A true NL268829A (https=) |
Family
ID=26739408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL268829D NL268829A (https=) | 1960-10-03 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1195365B (https=) |
| NL (1) | NL268829A (https=) |
-
0
- NL NL268829D patent/NL268829A/xx unknown
-
1961
- 1961-09-11 DE DEW30678A patent/DE1195365B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1195365B (de) | 1965-06-24 |