BE462769A - - Google Patents
Info
- Publication number
- BE462769A BE462769A BE462769DA BE462769A BE 462769 A BE462769 A BE 462769A BE 462769D A BE462769D A BE 462769DA BE 462769 A BE462769 A BE 462769A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/581—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using a transformer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH589784X | 1944-04-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE462769A true BE462769A (en) |
Family
ID=4522075
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE462769D BE462769A (en) | 1944-04-04 | ||
| BE589784A BE589784A (en) | 1959-04-17 | 1960-04-15 | Process for the preparation of novel heterocyclic compounds, in particular of pyrazolo (3,4-d) pyrimidines |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE589784A BE589784A (en) | 1959-04-17 | 1960-04-15 | Process for the preparation of novel heterocyclic compounds, in particular of pyrazolo (3,4-d) pyrimidines |
Country Status (3)
| Country | Link |
|---|---|
| BE (2) | BE589784A (en) |
| FR (1) | FR912557A (en) |
| GB (1) | GB589784A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2576728B1 (en) * | 1985-01-25 | 1988-02-12 | Thebault Jack | CIRCUIT FOR SEARCHING FOR BALANCING A TRANSMISSION LINE |
| FI71857C (en) * | 1985-06-13 | 1987-02-09 | Nokia Oy Ab | Method for adjusting the equalization impedance of a fork transformer. |
-
0
- BE BE462769D patent/BE462769A/xx unknown
-
1945
- 1945-04-04 GB GB8339/45A patent/GB589784A/en not_active Expired
- 1945-07-17 FR FR912557D patent/FR912557A/en not_active Expired
-
1960
- 1960-04-15 BE BE589784A patent/BE589784A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE589784A (en) | 1960-10-17 |
| FR912557A (en) | 1946-08-13 |
| GB589784A (en) | 1947-06-30 |