CH216835A - Einrichtung zur Vierdrahtdurchschaltung von Fernleitungen. - Google Patents
Einrichtung zur Vierdrahtdurchschaltung von Fernleitungen.Info
- Publication number
- CH216835A CH216835A CH216835DA CH216835A CH 216835 A CH216835 A CH 216835A CH 216835D A CH216835D A CH 216835DA CH 216835 A CH216835 A CH 216835A
- Authority
- CH
- Switzerland
- Prior art keywords
- wire connection
- trunk lines
- trunk
- lines
- wire
- Prior art date
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
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE216835X | 1939-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH216835A true CH216835A (de) | 1941-09-15 |
Family
ID=5830411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH216835D CH216835A (de) | 1939-12-08 | 1940-09-21 | Einrichtung zur Vierdrahtdurchschaltung von Fernleitungen. |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH216835A (fr) |
| FR (1) | FR868497A (fr) |
-
1940
- 1940-09-21 CH CH216835D patent/CH216835A/de unknown
- 1940-12-28 FR FR868497D patent/FR868497A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR868497A (fr) | 1941-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR856152A (fr) | Système téléphonique | |
| FR951376A (fr) | Système téléphonique | |
| FR1031552A (fr) | Système de téléphonie | |
| FR886262A (fr) | Dispositif de modulateur | |
| CH216835A (de) | Einrichtung zur Vierdrahtdurchschaltung von Fernleitungen. | |
| CH220361A (de) | Telephonapparat. | |
| FR853127A (fr) | Appareil d'installation rapide de lignes téléphoniques militaires | |
| CH227269A (de) | Anordnung zur Vierdrahtdurchschaltung von Fernleitungen. | |
| FR863769A (fr) | Tracteur-treuil | |
| FR867065A (fr) | éthers-sels, éthers-oxydes mixtes de polyalcools | |
| FR51052E (fr) | Cloche de sauvetage | |
| CH212662A (de) | Sendeeinrichtung zur Erzielung von Kurslinien. | |
| FI20992A (fi) | Multipeltelefonisystem | |
| FR864369A (fr) | étui pour allumettes | |
| ES146503A3 (es) | Procedimiento heliográfico. | |
| FR869078A (fr) | Système téléphonique | |
| GR8494B (el) | Αδιαβροχος σανις. | |
| ES148972A1 (es) | Acooplamiento de garras | |
| ES5523Y (es) | Suspensorio. | |
| FI19530A (fi) | Automatiskt skjutvapen | |
| FR863476A (fr) | Système téléphonique multiple | |
| FR851033A (fr) | Tire-bonde | |
| DK58634C (da) | Slæbevod. | |
| GR8193B (el) | Χειροκινητος αλωνιστικη συσκευη. | |
| FI20486A (fi) | Elektriskt urladdningsrör i vilket strömtillföringstrådarna äro ömsesidigt avskärmade |