FR957920A - - Google Patents
Info
- Publication number
- FR957920A FR957920A FR957920DA FR957920A FR 957920 A FR957920 A FR 957920A FR 957920D A FR957920D A FR 957920DA FR 957920 A FR957920 A FR 957920A
- 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
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/20—Repeater circuits; Relay circuits
- H04L25/24—Relay circuits using discharge tubes or semiconductor devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB895139A GB526680A (en) | 1939-03-21 | 1939-03-21 | Improvements in high speed telegraph signal recording systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR957920A true FR957920A (en, 2012) | 1950-02-28 |
Family
ID=9862465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR957920D Expired FR957920A (en, 2012) | 1939-03-21 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR957920A (en, 2012) |
| GB (1) | GB526680A (en, 2012) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2520308A (en) * | 1947-02-20 | 1950-08-29 | Erco Radio Lab Inc | Frequency shift converter |
-
0
- FR FR957920D patent/FR957920A/fr not_active Expired
-
1939
- 1939-03-21 GB GB895139A patent/GB526680A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB526680A (en) | 1940-09-24 |