BE375450A - - Google Patents
Info
- Publication number
- BE375450A BE375450A BE375450DA BE375450A BE 375450 A BE375450 A BE 375450A BE 375450D A BE375450D A BE 375450DA BE 375450 A BE375450 A BE 375450A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Testing Relating To Insulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE368707X | 1929-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE375450A true BE375450A (en:Method) |
Family
ID=6318128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE375450D BE375450A (en:Method) | 1929-12-02 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE375450A (en:Method) |
| FR (1) | FR706755A (en:Method) |
| GB (1) | GB368707A (en:Method) |
| NL (1) | NL32175C (en:Method) |
-
0
- BE BE375450D patent/BE375450A/xx unknown
- NL NL32175D patent/NL32175C/xx active
-
1930
- 1930-12-01 FR FR706755D patent/FR706755A/fr not_active Expired
- 1930-12-01 GB GB36219/30A patent/GB368707A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB368707A (en) | 1932-03-01 |
| NL32175C (en:Method) | |
| FR706755A (fr) | 1931-06-29 |