DK534678A - Ledningsforstaerker til firtraads-in-formationsoverfoeringsindretninger - Google Patents
Ledningsforstaerker til firtraads-in-formationsoverfoeringsindretningerInfo
- Publication number
- DK534678A DK534678A DK534978A DK534678A DK534678A DK 534678 A DK534678 A DK 534678A DK 534978 A DK534978 A DK 534978A DK 534678 A DK534678 A DK 534678A DK 534678 A DK534678 A DK 534678A
- Authority
- DK
- Denmark
- Prior art keywords
- firtraads
- information transfer
- transfer devices
- amplifiers
- wire
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/40—Monitoring; Testing of relay systems
- H04B17/401—Monitoring; Testing of relay systems with selective localization
- H04B17/402—Monitoring; Testing of relay systems with selective localization using different frequencies
- H04B17/403—Monitoring; Testing of relay systems with selective localization using different frequencies generated by local oscillators
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Fire Alarms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2753465A DE2753465C2 (de) | 1977-11-30 | 1977-11-30 | Leitungsverstarker fur Vierdraht-Nachrichtenübertragungseinrichtungen |
Publications (1)
Publication Number | Publication Date |
---|---|
DK534678A true DK534678A (da) | 1979-05-31 |
Family
ID=6025020
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK534978A DK534678A (da) | 1977-11-30 | 1978-11-29 | Ledningsforstaerker til firtraads-in-formationsoverfoeringsindretninger |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS54100212A (da) |
AT (1) | AT375509B (da) |
AU (1) | AU515433B2 (da) |
DE (1) | DE2753465C2 (da) |
DK (1) | DK534678A (da) |
IT (1) | IT1101136B (da) |
NL (1) | NL7811729A (da) |
NO (1) | NO145969C (da) |
SE (1) | SE7812133L (da) |
YU (1) | YU40050B (da) |
-
1977
- 1977-11-30 DE DE2753465A patent/DE2753465C2/de not_active Expired
-
1978
- 1978-11-22 AU AU41797/78A patent/AU515433B2/en not_active Expired
- 1978-11-24 SE SE7812133A patent/SE7812133L/xx unknown
- 1978-11-24 IT IT30133/78A patent/IT1101136B/it active
- 1978-11-28 YU YU2811/78A patent/YU40050B/xx unknown
- 1978-11-29 DK DK534978A patent/DK534678A/da unknown
- 1978-11-29 NO NO784019A patent/NO145969C/no unknown
- 1978-11-30 JP JP14732078A patent/JPS54100212A/ja active Pending
- 1978-11-30 AT AT0857578A patent/AT375509B/de not_active IP Right Cessation
- 1978-11-30 NL NL7811729A patent/NL7811729A/xx not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
YU40050B (en) | 1985-06-30 |
ATA857578A (de) | 1983-12-15 |
NO145969C (no) | 1982-06-30 |
JPS54100212A (en) | 1979-08-07 |
YU281178A (en) | 1983-04-30 |
DE2753465B1 (de) | 1979-01-18 |
IT1101136B (it) | 1985-09-28 |
NO145969B (no) | 1982-03-22 |
IT7830133A0 (it) | 1978-11-24 |
AU515433B2 (en) | 1981-04-02 |
DE2753465C2 (de) | 1979-10-04 |
AU4179778A (en) | 1979-06-07 |
NL7811729A (nl) | 1979-06-01 |
NO784019L (no) | 1979-05-31 |
AT375509B (de) | 1984-08-10 |
SE7812133L (sv) | 1979-05-31 |
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