BE439942A - - Google Patents
Info
- Publication number
- BE439942A BE439942A BE439942DA BE439942A BE 439942 A BE439942 A BE 439942A BE 439942D A BE439942D A BE 439942DA BE 439942 A BE439942 A BE 439942A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/08—Arrangements for interconnection between switching centres for phantom working
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB215524X | 1939-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE439942A true BE439942A (ja) |
Family
ID=10164814
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE439942D BE439942A (ja) | 1939-06-13 | ||
| BE439843D BE439843A (ja) | 1939-06-13 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE439843D BE439843A (ja) | 1939-06-13 |
Country Status (4)
| Country | Link |
|---|---|
| BE (2) | BE439843A (ja) |
| CH (2) | CH215524A (ja) |
| FR (2) | FR947900A (ja) |
| GB (2) | GB530621A (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE972640C (de) * | 1952-04-10 | 1959-08-27 | Siemens Ag | Schaltungsanordnung fuer Fernmeldeanlagen zur gleichzeitigen UEbertragung von Fernsprechstroemen und Signalen ueber dieselben Leitungsadern |
-
0
- BE BE439942D patent/BE439942A/xx unknown
- BE BE439843D patent/BE439843A/xx unknown
-
1939
- 1939-06-13 GB GB17287/39A patent/GB530621A/en not_active Expired
- 1939-06-30 GB GB19118/39A patent/GB530669A/en not_active Expired
-
1940
- 1940-06-06 CH CH215524D patent/CH215524A/de unknown
- 1940-06-08 CH CH228092D patent/CH228092A/de unknown
-
1947
- 1947-06-13 FR FR947900D patent/FR947900A/fr not_active Expired
- 1947-07-12 FR FR57449D patent/FR57449E/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB530669A (en) | 1940-12-17 |
| GB530621A (en) | 1940-12-17 |
| BE439843A (ja) | |
| CH228092A (de) | 1943-07-31 |
| FR947900A (fr) | 1949-07-15 |
| CH215524A (de) | 1941-06-30 |
| FR57449E (fr) | 1953-01-02 |