BE479409A - - Google Patents
Info
- Publication number
- BE479409A BE479409A BE479409DA BE479409A BE 479409 A BE479409 A BE 479409A BE 479409D A BE479409D A BE 479409DA BE 479409 A BE479409 A BE 479409A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J1/00—Frequency-division multiplex systems
- H04J1/02—Details
- H04J1/04—Frequency-transposition arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplitude Modulation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR265352X | 1945-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE479409A true BE479409A (sv) |
Family
ID=8885446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE479409D BE479409A (sv) | 1945-05-15 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2546994A (sv) |
| BE (1) | BE479409A (sv) |
| CH (1) | CH265352A (sv) |
| ES (1) | ES182438A1 (sv) |
| FR (1) | FR960982A (sv) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3344368A (en) * | 1967-09-26 | Fettweis bandpass filter | ||
| NL185193B (nl) * | 1953-02-18 | Arnold L & C | Bedtafelblad voor ziekenhuisnachtkastjes. | |
| US3020349A (en) * | 1954-12-03 | 1962-02-06 | Int Standard Electric Corp | Electric pulse modulating and demodulating circuits |
| US3613032A (en) * | 1970-03-19 | 1971-10-12 | Hughes Aircraft Co | Composite crystal filter circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH204088A (de) * | 1937-06-03 | 1939-04-15 | Neue Telefon Gmbh | Verfahren zum Betreiben von Trockengleichrichtermodulatoren in Trägerstromanlagen. |
| FR845377A (fr) * | 1937-10-30 | 1939-08-21 | Materiel Telephonique | Systèmes transmetteurs et récepteurs pour téléphonie multiplex ou analogues |
| GB519264A (en) * | 1938-10-10 | 1940-03-20 | Philips Nv | Improvements in or relating to multi-carrier transmission systems |
-
0
- FR FR960982D patent/FR960982A/fr not_active Expired
- BE BE479409D patent/BE479409A/xx unknown
-
1947
- 1947-12-29 CH CH265352D patent/CH265352A/de unknown
-
1948
- 1948-01-20 US US3208A patent/US2546994A/en not_active Expired - Lifetime
- 1948-02-18 ES ES182438A patent/ES182438A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2546994A (en) | 1951-04-03 |
| FR960982A (sv) | 1950-04-28 |
| CH265352A (de) | 1949-11-30 |
| ES182438A1 (es) | 1948-04-16 |