NL7217681A - - Google Patents
Info
- Publication number
- NL7217681A NL7217681A NL7217681A NL7217681A NL7217681A NL 7217681 A NL7217681 A NL 7217681A NL 7217681 A NL7217681 A NL 7217681A NL 7217681 A NL7217681 A NL 7217681A NL 7217681 A NL7217681 A NL 7217681A
- 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)
- Filters And Equalizers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA133431A CA938345A (en) | 1972-01-28 | 1972-01-28 | Frequency determining network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7217681A true NL7217681A (enExample) | 1973-07-31 |
Family
ID=4092175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7217681A NL7217681A (enExample) | 1972-01-28 | 1972-12-27 |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS4885009A (enExample) |
| AU (1) | AU5112173A (enExample) |
| BE (1) | BE791353A (enExample) |
| CA (1) | CA938345A (enExample) |
| DE (1) | DE2301227A1 (enExample) |
| FR (1) | FR2169075A1 (enExample) |
| IL (1) | IL40787A (enExample) |
| IT (1) | IT973344B (enExample) |
| NL (1) | NL7217681A (enExample) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3011651A1 (de) * | 1980-03-26 | 1981-10-01 | Robert Bosch Gmbh, 7000 Stuttgart | Durchstimmbarer oszillator |
-
0
- BE BE791353D patent/BE791353A/xx unknown
-
1972
- 1972-01-28 CA CA133431A patent/CA938345A/en not_active Expired
- 1972-11-09 IL IL40787A patent/IL40787A/xx unknown
- 1972-12-27 NL NL7217681A patent/NL7217681A/xx unknown
- 1972-12-29 IT IT34047/72A patent/IT973344B/it active
-
1973
- 1973-01-11 DE DE2301227A patent/DE2301227A1/de active Pending
- 1973-01-15 AU AU51121/73A patent/AU5112173A/en not_active Expired
- 1973-01-17 FR FR7301603A patent/FR2169075A1/fr not_active Withdrawn
- 1973-01-23 JP JP48009819A patent/JPS4885009A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU5112173A (en) | 1974-07-18 |
| IT973344B (it) | 1974-06-10 |
| DE2301227A1 (de) | 1973-08-23 |
| IL40787A (en) | 1975-05-22 |
| IL40787A0 (en) | 1973-01-30 |
| JPS4885009A (enExample) | 1973-11-12 |
| CA938345A (en) | 1973-12-11 |
| FR2169075A1 (enExample) | 1973-09-07 |
| BE791353A (fr) | 1973-03-01 |