BE494824A - - Google Patents
Info
- Publication number
- BE494824A BE494824A BE494824DA BE494824A BE 494824 A BE494824 A BE 494824A BE 494824D A BE494824D A BE 494824DA BE 494824 A BE494824 A BE 494824A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/54—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements of vacuum tubes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB300209X | 1949-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE494824A true BE494824A (it) |
Family
ID=10300973
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494824D BE494824A (it) | 1949-03-29 | ||
| BE494825D BE494825A (it) | 1949-03-29 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494825D BE494825A (it) | 1949-03-29 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2583711A (it) |
| BE (2) | BE494825A (it) |
| CH (1) | CH300209A (it) |
| DE (1) | DE931243C (it) |
| FR (1) | FR1018011A (it) |
| GB (1) | GB731912A (it) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL146481B (nl) * | 1948-05-15 | Dow Chemical Co | Werkwijze voor het bereiden van hydraulische vloeistoffen of componenten daarvan. | |
| BE496495A (it) * | 1949-06-21 | |||
| NL86409C (it) * | 1949-10-26 | |||
| BE502518A (it) * | 1950-01-06 | |||
| GB744291A (en) * | 1950-01-16 | 1956-02-01 | Standard Telephones Cables Ltd | Improvements in or relating to electrical communication systems |
| BE503318A (it) * | 1950-05-17 | |||
| USRE24679E (en) * | 1951-02-02 | 1959-08-11 | Automatic telephone systems | |
| GB759693A (en) * | 1951-02-16 | 1956-10-24 | Gen Electric Co Ltd | Improvements in or relating to automatic telephone systems |
| BE512899A (it) * | 1951-07-21 | |||
| US2611025A (en) * | 1951-08-01 | 1952-09-16 | Gen Electric | Selective signal transmission system |
| US2756329A (en) * | 1951-09-10 | 1956-07-24 | Underwood Corp | Bi-stable device |
| US2747020A (en) * | 1951-11-24 | 1956-05-22 | Gen Electric Co Ltd | Telecommunication systems embodying automatic exchanges |
| US2754503A (en) * | 1951-12-21 | 1956-07-10 | Little Inc A | Digital reading apparatus |
| US3084287A (en) * | 1958-11-13 | 1963-04-02 | Atomic Energy Authority Uk | Electrical circuits performing a switching function |
| US3073906A (en) * | 1959-06-16 | 1963-01-15 | Bell Telephone Labor Inc | Line concentrating telephone system |
| US3809815A (en) * | 1972-05-04 | 1974-05-07 | Litton Systems Inc | Communication system utilizing frequency division multiplexing to link a plurality of stations each containing a switchable synthesizer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2471138A (en) * | 1946-08-16 | 1949-05-24 | Gen Electric | Radio communication system |
-
0
- BE BE494824D patent/BE494824A/xx unknown
- BE BE494825D patent/BE494825A/xx unknown
- US US2583711D patent/US2583711A/en not_active Expired - Lifetime
-
1949
- 1949-03-29 GB GB6906/50A patent/GB731912A/en not_active Expired
-
1950
- 1950-03-29 CH CH300209D patent/CH300209A/fr unknown
- 1950-03-29 FR FR1018011D patent/FR1018011A/fr not_active Expired
- 1950-04-09 DE DES2719A patent/DE931243C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH300209A (fr) | 1954-07-15 |
| GB731912A (en) | 1955-06-15 |
| US2583711A (en) | 1952-01-29 |
| DE931243C (de) | 1955-08-04 |
| BE494825A (it) | |
| FR1018011A (fr) | 1952-12-24 |