LU67638A1 - - Google Patents
Info
- Publication number
- LU67638A1 LU67638A1 LU67638A LU67638DA LU67638A1 LU 67638 A1 LU67638 A1 LU 67638A1 LU 67638 A LU67638 A LU 67638A LU 67638D A LU67638D A LU 67638DA LU 67638 A1 LU67638 A1 LU 67638A1
- Authority
- LU
- Luxembourg
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
- H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Toys (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2225225A DE2225225B2 (en) | 1972-05-24 | 1972-05-24 | Number switches for telecommunications, in particular telephones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU67638A1 true LU67638A1 (en) | 1973-07-26 |
Family
ID=5845744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU67638A LU67638A1 (en) | 1972-05-24 | 1973-05-22 |
Country Status (11)
| Country | Link |
|---|---|
| AR (1) | AR194560A1 (en) |
| BE (1) | BE799983A (en) |
| BR (1) | BR7303834D0 (en) |
| CH (1) | CH548712A (en) |
| DE (1) | DE2225225B2 (en) |
| FR (1) | FR2185903A1 (en) |
| GB (1) | GB1377338A (en) |
| IT (1) | IT987785B (en) |
| LU (1) | LU67638A1 (en) |
| NL (1) | NL7306108A (en) |
| ZA (1) | ZA732876B (en) |
-
1972
- 1972-05-24 DE DE2225225A patent/DE2225225B2/en active Pending
-
1973
- 1973-03-22 CH CH415173A patent/CH548712A/en not_active IP Right Cessation
- 1973-04-16 GB GB1815373A patent/GB1377338A/en not_active Expired
- 1973-04-27 ZA ZA732876A patent/ZA732876B/en unknown
- 1973-05-02 NL NL7306108A patent/NL7306108A/xx unknown
- 1973-05-22 LU LU67638A patent/LU67638A1/xx unknown
- 1973-05-22 IT IT24379/73A patent/IT987785B/en active
- 1973-05-22 FR FR7318517A patent/FR2185903A1/fr active Pending
- 1973-05-23 AR AR248210A patent/AR194560A1/en active
- 1973-05-24 BR BR003834/73A patent/BR7303834D0/en unknown
- 1973-05-24 BE BE131480A patent/BE799983A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA732876B (en) | 1974-03-27 |
| IT987785B (en) | 1975-03-20 |
| NL7306108A (en) | 1973-11-27 |
| FR2185903A1 (en) | 1974-01-04 |
| BE799983A (en) | 1973-11-26 |
| DE2225225B2 (en) | 1974-04-18 |
| DE2225225A1 (en) | 1973-12-06 |
| CH548712A (en) | 1974-04-30 |
| GB1377338A (en) | 1974-12-11 |
| AR194560A1 (en) | 1973-07-23 |
| BR7303834D0 (en) | 1973-12-20 |