NL49884C - - Google Patents
Info
- Publication number
- NL49884C NL49884C NL49884DA NL49884C NL 49884 C NL49884 C NL 49884C NL 49884D A NL49884D A NL 49884DA NL 49884 C NL49884 C NL 49884C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US143107A US2131976A (en) | 1937-05-17 | 1937-05-17 | Image suppression system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL49884C true NL49884C (cs) |
Family
ID=22502627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL49884D NL49884C (cs) | 1937-05-17 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2131976A (cs) |
| CH (1) | CH207423A (cs) |
| FR (1) | FR838061A (cs) |
| GB (1) | GB514640A (cs) |
| NL (1) | NL49884C (cs) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE971852C (de) * | 1938-08-17 | 1959-04-09 | Georg Von Schaub | Abstimmeinrichtung, insbesondere zur Abstimmung von Rundfunkgeraeten |
| US2486986A (en) * | 1943-06-28 | 1949-11-01 | Rca Corp | Permeability tuning system |
| US2475032A (en) * | 1945-03-17 | 1949-07-05 | Rca Corp | Variable permeability tuning system |
| US2512481A (en) * | 1947-06-25 | 1950-06-20 | Avco Mfg Corp | Antenna input circuits |
| US2542495A (en) * | 1947-11-19 | 1951-02-20 | Sylvania Electric Prod | Image reduction circuit |
| US2673933A (en) * | 1951-05-31 | 1954-03-30 | Designers For Industry Inc | Radio circuit tuning device |
| GB847255A (en) * | 1957-10-15 | 1960-09-07 | Gen Electric Co Ltd | Improvements in or relating to superheterodyne radio receivers |
| US3101463A (en) * | 1958-12-01 | 1963-08-20 | Gen Motors Corp | Shielded electrical coil assembly |
| IT1074089B (it) * | 1976-12-16 | 1985-04-17 | Sits Soc It Telecom Siemens | Filtro passa-reiettabanda per sistemi di telecomunicazioni |
-
0
- NL NL49884D patent/NL49884C/xx active
-
1937
- 1937-05-17 US US143107A patent/US2131976A/en not_active Expired - Lifetime
-
1938
- 1938-05-11 GB GB14078/38A patent/GB514640A/en not_active Expired
- 1938-05-13 CH CH207423D patent/CH207423A/de unknown
- 1938-05-17 FR FR838061D patent/FR838061A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR838061A (fr) | 1939-02-27 |
| CH207423A (de) | 1939-10-31 |
| GB514640A (en) | 1939-11-14 |
| US2131976A (en) | 1938-10-04 |