NL259673A - - Google Patents
Info
- Publication number
- NL259673A NL259673A NL259673DA NL259673A NL 259673 A NL259673 A NL 259673A NL 259673D A NL259673D A NL 259673DA NL 259673 A NL259673 A NL 259673A
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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)
- Signal Processing (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US1138435XA | 1960-01-19 | 1960-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL259673A true NL259673A (en:Method) |
Family
ID=22351841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL259673D NL259673A (en:Method) | 1960-01-19 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1138435B (en:Method) |
| NL (1) | NL259673A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1288164B (de) * | 1965-10-23 | 1969-01-30 | Robert Bosch Gmbh Elektronik U | Schaltungsanordnung zum Erzeugen eines Kennungs- oder Selektivrufzeichens |
-
0
- NL NL259673D patent/NL259673A/xx unknown
-
1960
- 1960-12-19 DE DEW29121A patent/DE1138435B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1138435B (de) | 1962-10-25 |