FR2157159A5 - - Google Patents
Info
- Publication number
- FR2157159A5 FR2157159A5 FR7137681A FR7137681A FR2157159A5 FR 2157159 A5 FR2157159 A5 FR 2157159A5 FR 7137681 A FR7137681 A FR 7137681A FR 7137681 A FR7137681 A FR 7137681A FR 2157159 A5 FR2157159 A5 FR 2157159A5
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephonic Communication Services (AREA)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE789970D BE789970A (fr) | 1971-10-20 | Dispositif electronique de modulation de courant, notamment de tonalitede faux-appels | |
FR7137681A FR2157159A5 (enrdf_load_html_response) | 1971-10-20 | 1971-10-20 | |
CH1483772A CH565488A5 (enrdf_load_html_response) | 1971-10-20 | 1972-10-09 | |
DE19722250647 DE2250647A1 (de) | 1971-10-20 | 1972-10-16 | Elektronische vorrichtung zur modulation eines stroms, insbesondere von falschanrufsignalen |
IT3057972A IT969631B (it) | 1971-10-20 | 1972-10-18 | Dispositivo elettronico di modula zione di corrente in particolare di tonalita di falsa chiamata |
SE1348872A SE389251B (sv) | 1971-10-20 | 1972-10-19 | Strommoduleringsanordning for anvendning i telefonvexlar och som medger matande av flera ledningsutrustningar med falskt anropstillstand med en rytmisk tonsignalstrom |
GB4832272A GB1413312A (en) | 1971-10-20 | 1972-10-20 | Supply current modulation device |
NL7214189A NL7214189A (enrdf_load_html_response) | 1971-10-20 | 1972-10-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7137681A FR2157159A5 (enrdf_load_html_response) | 1971-10-20 | 1971-10-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2157159A5 true FR2157159A5 (enrdf_load_html_response) | 1973-06-01 |
Family
ID=9084647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7137681A Expired FR2157159A5 (enrdf_load_html_response) | 1971-10-20 | 1971-10-20 |
Country Status (8)
Country | Link |
---|---|
BE (1) | BE789970A (enrdf_load_html_response) |
CH (1) | CH565488A5 (enrdf_load_html_response) |
DE (1) | DE2250647A1 (enrdf_load_html_response) |
FR (1) | FR2157159A5 (enrdf_load_html_response) |
GB (1) | GB1413312A (enrdf_load_html_response) |
IT (1) | IT969631B (enrdf_load_html_response) |
NL (1) | NL7214189A (enrdf_load_html_response) |
SE (1) | SE389251B (enrdf_load_html_response) |
-
0
- BE BE789970D patent/BE789970A/xx unknown
-
1971
- 1971-10-20 FR FR7137681A patent/FR2157159A5/fr not_active Expired
-
1972
- 1972-10-09 CH CH1483772A patent/CH565488A5/xx not_active IP Right Cessation
- 1972-10-16 DE DE19722250647 patent/DE2250647A1/de active Pending
- 1972-10-18 IT IT3057972A patent/IT969631B/it active
- 1972-10-19 SE SE1348872A patent/SE389251B/xx unknown
- 1972-10-20 NL NL7214189A patent/NL7214189A/xx not_active Application Discontinuation
- 1972-10-20 GB GB4832272A patent/GB1413312A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE789970A (fr) | 1973-04-12 |
NL7214189A (enrdf_load_html_response) | 1973-04-25 |
SE389251B (sv) | 1976-10-25 |
IT969631B (it) | 1974-04-10 |
DE2250647A1 (de) | 1973-04-26 |
GB1413312A (en) | 1975-11-12 |
CH565488A5 (enrdf_load_html_response) | 1975-08-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |