NL88017C - - Google Patents
Info
- Publication number
- NL88017C NL88017C NL88017DA NL88017C NL 88017 C NL88017 C NL 88017C NL 88017D A NL88017D A NL 88017DA NL 88017 C NL88017 C NL 88017C
- 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
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J3/00—Continuous tuning
- H03J3/28—Continuous tuning of more than one resonant circuit simultaneously, the tuning frequencies of the circuits having a substantially constant difference throughout the tuning range
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Superheterodyne Receivers (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Circuits Of Receivers In General (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL279489X | 1949-02-16 | ||
| NL2737580X | 1950-07-08 | ||
| US235286A US2737580A (en) | 1949-02-16 | 1951-07-05 | Mixing circuit for superheterodyne receivers |
| US554600A US2816222A (en) | 1949-02-16 | 1955-12-01 | Mixing circuit for superheterodyne receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL88017C true NL88017C (es) |
Family
ID=32329976
Family Applications (5)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL88017D NL88017C (es) | 1949-02-16 | ||
| NL83683D NL83683C (es) | 1949-02-16 | ||
| NL666612648A NL147897B (nl) | 1949-02-16 | Versterker. | |
| NL89165D NL89165C (es) | 1949-02-16 | ||
| NL656503676A NL144909B (nl) | 1949-02-16 | Werkwijze voor het vervaardigen van een glazen voorwerp met verhoogde breuksterkte alsmede met deze werkwijze verkregen glazen voorwerp. |
Family Applications After (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL83683D NL83683C (es) | 1949-02-16 | ||
| NL666612648A NL147897B (nl) | 1949-02-16 | Versterker. | |
| NL89165D NL89165C (es) | 1949-02-16 | ||
| NL656503676A NL144909B (nl) | 1949-02-16 | Werkwijze voor het vervaardigen van een glazen voorwerp met verhoogde breuksterkte alsmede met deze werkwijze verkregen glazen voorwerp. |
Country Status (7)
| Country | Link |
|---|---|
| US (2) | US2662171A (es) |
| BE (2) | BE493901A (es) |
| CH (2) | CH279489A (es) |
| DE (2) | DE914397C (es) |
| FR (2) | FR1015619A (es) |
| GB (2) | GB668238A (es) |
| NL (5) | NL144909B (es) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL88017C (es) * | 1949-02-16 | |||
| US2737580A (en) * | 1949-02-16 | 1956-03-06 | Hartford Nat Bank & Trust Co | Mixing circuit for superheterodyne receivers |
| NL189202B (nl) * | 1954-07-14 | Air Prod & Chem | Werkwijze voor het bereiden van een polyurethaanschuim; trimethylhydroxyalkyl alkyleendiamine. | |
| US2933599A (en) * | 1955-04-05 | 1960-04-19 | Hazeltine Research Inc | Non-radiating autodyne frequency converter |
| DE1016775B (de) * | 1956-05-18 | 1957-10-03 | Telefunken Gmbh | Selbstschwingende Mischstufe mit Triode fuer hohe Frequenzen, z.B. in Fernsehempfaengern mit Kanalschalter |
| US2950383A (en) * | 1957-08-22 | 1960-08-23 | Rca Corp | Frequency converter with oscillator tuning inductor |
| US3018372A (en) * | 1958-02-17 | 1962-01-23 | Sarkes Tarzian | High frequency tuner |
| US3207990A (en) * | 1961-08-10 | 1965-09-21 | Standard Kollsman Ind Inc | Unilaterally-transmissive frequency-selective triode converter |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE369710C (de) * | 1918-07-18 | 1923-02-22 | Erich F Huth G M B H Dr | Einrichtung zur Erzeugung und Verstaerkung von Schwingungen beliebiger Frequenz, insbesondere fuer drahtlose Telegraphie |
| FR628518A (fr) * | 1927-01-15 | 1927-10-25 | Procédé de changement de fréquence pour radiosignalisation et dispositif pour la réalisation de ce procédé | |
| NL25668C (es) * | 1927-03-25 | |||
| FR673718A (fr) * | 1928-08-25 | 1930-01-18 | Radiomodulation par les lampes à faible capacité intérieure | |
| GB327710A (en) * | 1929-01-09 | 1930-04-09 | Gramophone Co Ltd | Improvements in or relating to tuning devices for wireless receivers |
| US1818157A (en) * | 1929-04-17 | 1931-08-11 | Maurice M Phillips | Radio receiving circuits |
| US1895091A (en) * | 1930-08-19 | 1933-01-24 | Hazeltine Corp | Electric coupling circuit |
| US1957446A (en) * | 1931-02-13 | 1934-05-08 | Jennings B Dow | Oscillator system |
| DE739095C (de) * | 1932-04-16 | 1944-01-19 | Opta Radio Ag | Mischroehrenschaltung fuer UEberlagerungsempfaenger |
| US2058430A (en) * | 1932-04-27 | 1936-10-27 | Harold F Elliott | Modulator and demodulator |
| US1927189A (en) * | 1932-10-20 | 1933-09-19 | Martin L Sory | Automobile highway safety wall |
| US2010253A (en) * | 1933-12-29 | 1935-08-06 | Rca Corp | Amplifier |
| US2051177A (en) * | 1935-02-13 | 1936-08-18 | Radio Patents Corp | Electron coupled circuit |
| US2156809A (en) * | 1937-03-04 | 1939-05-02 | Stanley T Fredrickson | Radio receiving system |
| US2231389A (en) * | 1939-05-08 | 1941-02-11 | Philips Nv | Tunable oscillatory circuits |
| NL88017C (es) * | 1949-02-16 |
-
0
- NL NL88017D patent/NL88017C/xx active
- NL NL83683D patent/NL83683C/xx active
- NL NL666612648A patent/NL147897B/xx unknown
- NL NL89165D patent/NL89165C/xx active
- BE BE504519D patent/BE504519A/xx unknown
- NL NL656503676A patent/NL144909B/xx unknown
- BE BE493901D patent/BE493901A/xx unknown
-
1950
- 1950-02-13 GB GB3614/50A patent/GB668238A/en not_active Expired
- 1950-02-14 CH CH279489D patent/CH279489A/de unknown
- 1950-02-14 FR FR1015619D patent/FR1015619A/fr not_active Expired
- 1950-02-14 DE DEN505A patent/DE914397C/de not_active Expired
- 1950-02-15 US US144328A patent/US2662171A/en not_active Expired - Lifetime
-
1951
- 1951-07-03 DE DEN4121A patent/DE1011478B/de active Pending
- 1951-07-05 GB GB15962/51A patent/GB683939A/en not_active Expired
- 1951-07-06 CH CH294959D patent/CH294959A/de unknown
- 1951-07-06 FR FR61832D patent/FR61832E/fr not_active Expired
-
1955
- 1955-12-01 US US554600A patent/US2816222A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL147897B (nl) | |
| BE504519A (es) | |
| GB668238A (en) | 1952-03-12 |
| US2816222A (en) | 1957-12-10 |
| NL89165C (es) | |
| CH279489A (de) | 1951-11-30 |
| DE1011478B (de) | 1957-07-04 |
| NL83683C (es) | |
| CH294959A (de) | 1953-11-30 |
| GB683939A (en) | 1952-12-10 |
| BE493901A (es) | |
| DE914397C (de) | 1954-07-01 |
| US2662171A (en) | 1953-12-08 |
| FR1015619A (fr) | 1952-10-16 |
| NL144909B (nl) | |
| FR61832E (fr) | 1955-05-18 |