NL7201006A - - Google Patents
Info
- Publication number
- NL7201006A NL7201006A NL7201006A NL7201006A NL7201006A NL 7201006 A NL7201006 A NL 7201006A NL 7201006 A NL7201006 A NL 7201006A NL 7201006 A NL7201006 A NL 7201006A NL 7201006 A NL7201006 A NL 7201006A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2104280A DE2104280C3 (de) | 1971-01-29 | 1971-01-29 | Echosperre für einen Sprechkreis auf einem Vierdraht-Übertragungssystem |
| DE19712138816 DE2138816B2 (de) | 1971-08-03 | 1971-08-03 | Echosperre fuer einen sprechkreis auf einem vierdraht-uebertragungssystem |
| DE19712138818 DE2138818C (de) | 1971-08-03 | Echosperre fur einen Sprechkreis auf einem Vierdraht Übertragungssystem | |
| DE19712138817 DE2138817C (de) | 1971-08-03 | Echosperre fur einen Sprechkreis auf einem Vierdraht Übertragungssystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7201006A true NL7201006A (https=) | 1972-08-01 |
Family
ID=27431199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7201006A NL7201006A (https=) | 1971-01-29 | 1972-01-25 |
Country Status (6)
| Country | Link |
|---|---|
| FR (1) | FR2124879A5 (https=) |
| GB (1) | GB1358457A (https=) |
| IL (1) | IL38648A (https=) |
| IT (1) | IT947086B (https=) |
| NL (1) | NL7201006A (https=) |
| SE (1) | SE380956B (https=) |
-
1972
- 1972-01-14 GB GB182772A patent/GB1358457A/en not_active Expired
- 1972-01-25 NL NL7201006A patent/NL7201006A/xx unknown
- 1972-01-26 IL IL38648A patent/IL38648A/xx unknown
- 1972-01-27 FR FR7202648A patent/FR2124879A5/fr not_active Expired
- 1972-01-28 SE SE7200984A patent/SE380956B/xx unknown
- 1972-01-28 IT IT19936/72A patent/IT947086B/it active
Also Published As
| Publication number | Publication date |
|---|---|
| IT947086B (it) | 1973-05-21 |
| IL38648A0 (en) | 1972-04-27 |
| IL38648A (en) | 1975-12-31 |
| SE380956B (sv) | 1975-11-17 |
| FR2124879A5 (https=) | 1972-09-22 |
| GB1358457A (en) | 1974-07-03 |