NL268873A - - Google Patents
Info
- Publication number
- NL268873A NL268873A NL268873DA NL268873A NL 268873 A NL268873 A NL 268873A NL 268873D A NL268873D A NL 268873DA NL 268873 A NL268873 A NL 268873A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/30—Devices which can set up and transmit only one digit at a time
- H04M1/50—Devices which can set up and transmit only one digit at a time by generating or selecting currents of predetermined frequencies or combinations of frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1158561A CH397005A (de) | 1961-10-06 | 1961-10-06 | Schaltungsanordnung für eine tonfrequente Tastwahl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL268873A true NL268873A (de) |
Family
ID=4374899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL268873D NL268873A (de) | 1961-10-06 |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH397005A (de) |
| NL (1) | NL268873A (de) |
-
0
- NL NL268873D patent/NL268873A/xx unknown
-
1961
- 1961-10-06 CH CH1158561A patent/CH397005A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH397005A (de) | 1965-08-15 |