FR744002A - - Google Patents
Info
- Publication number
- FR744002A FR744002A FR744002DA FR744002A FR 744002 A FR744002 A FR 744002A FR 744002D A FR744002D A FR 744002DA FR 744002 A FR744002 A FR 744002A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
- H04J1/045—Filters applied to frequency transposition
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US556949A US1910977A (en) | 1931-08-14 | 1931-08-14 | Wave transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR744002A true FR744002A (it) | 1933-04-10 |
Family
ID=24223473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR744002D Expired FR744002A (it) | 1931-08-14 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1910977A (it) |
| DE (1) | DE613221C (it) |
| FR (1) | FR744002A (it) |
| GB (1) | GB405026A (it) |
| NL (1) | NL35164C (it) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE745229C (de) * | 1939-01-15 | 1944-03-01 | Lorenz C Ag | Schaltung zum Zusammenfuehren der Ausgaenge von abgestimmten Verstaerkern auf gemeinsame Verbraucher |
| DE865151C (de) * | 1943-05-18 | 1953-01-29 | Siemens Ag | Einseitenband-Traegerfrequenz-Fernsprechsystem |
| US2550198A (en) * | 1944-10-10 | 1951-04-24 | Marzin Pierre | Coaxial-cable carrier system |
| BE478612A (it) * | 1947-01-02 | |||
| DE973493C (de) * | 1950-09-28 | 1960-03-10 | Philips Nv | Einseitenbandtraegerfrequenzfernsprechsystem |
| US2991562A (en) * | 1953-04-10 | 1961-07-11 | Donald G C Hare | Training aid system for wave detection equipment |
| US2844711A (en) * | 1953-06-08 | 1958-07-22 | Motorola Inc | Multiple frequency channel multiplex communication system |
| NL188694B (nl) * | 1953-06-29 | Lilly Co Eli | Werkwijze voor de verlaging van de concentratie van nitroseermiddelen in 1-chloor-2,6-dinitro-4-(trifluormethyl)-benzeen. | |
| US2871293A (en) * | 1954-09-17 | 1959-01-27 | Itt | Multichannel telephone carrier system |
| US3754101A (en) * | 1971-07-02 | 1973-08-21 | Universal Signal Corp | Frequency rate communication system |
| US3771064A (en) * | 1972-07-03 | 1973-11-06 | Electronic Labor Inc | Bidirectional signal processing means |
-
0
- FR FR744002D patent/FR744002A/fr not_active Expired
- NL NL35164D patent/NL35164C/xx active
-
1931
- 1931-08-14 US US556949A patent/US1910977A/en not_active Expired - Lifetime
-
1932
- 1932-07-29 GB GB21416/32A patent/GB405026A/en not_active Expired
- 1932-08-13 DE DEI45103D patent/DE613221C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL35164C (it) | |
| GB405026A (en) | 1934-01-29 |
| DE613221C (de) | 1935-05-18 |
| US1910977A (en) | 1933-05-23 |