BE441132A - - Google Patents
Info
- Publication number
- BE441132A BE441132A BE441132DA BE441132A BE 441132 A BE441132 A BE 441132A BE 441132D A BE441132D A BE 441132DA BE 441132 A BE441132 A BE 441132A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/04—Means in or combined with modulating stage for reducing amplitude modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/28—Angle modulation by means of variable impedance using variable impedance driven mechanically or acoustically
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US319877A US2218524A (en) | 1940-02-20 | 1940-02-20 | Frequency modulation system |
| US326898A US2250104A (en) | 1940-02-20 | 1940-03-30 | Frequency regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE441132A true BE441132A (en:Method) | 1941-10-31 |
Family
ID=26982185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE441132D BE441132A (en:Method) | 1940-02-20 | 1941-04-10 |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US2218524A (en:Method) |
| BE (1) | BE441132A (en:Method) |
| DE (1) | DE882424C (en:Method) |
| FR (2) | FR869048A (en:Method) |
| GB (1) | GB546677A (en:Method) |
| NL (1) | NL67475C (en:Method) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2425657A (en) * | 1941-04-17 | 1947-08-12 | Rca Corp | Short-wave apparatus |
| US2440600A (en) * | 1941-05-14 | 1948-04-27 | Rca Corp | Electric motor control |
| US2475779A (en) * | 1941-05-14 | 1949-07-12 | Rca Corp | Wave length modulator and control means |
| US2966676A (en) * | 1942-06-30 | 1960-12-27 | Bessie E Fox | Electronic apparatus and method for measuring distance |
| US2794956A (en) * | 1942-06-30 | 1957-06-04 | Fox Benjamin | Frequency modulation system |
| US2422422A (en) * | 1942-08-31 | 1947-06-17 | Rca Corp | Reactance tube controlled generator |
| US2415868A (en) * | 1942-10-28 | 1947-02-18 | Rca Corp | Timing modulation |
| US2434259A (en) * | 1943-06-22 | 1948-01-13 | Bell Telephone Labor Inc | Circuit arrangement utilizing a plurality of electron discharge devices |
| US2511137A (en) * | 1944-12-16 | 1950-06-13 | Rca Corp | Frequency control |
| US2609509A (en) * | 1945-06-13 | 1952-09-02 | Bertram C Hill | Electrical testing apparatus |
| US2490448A (en) * | 1945-11-09 | 1949-12-06 | Amalgamated Wireless Australas | Frequency changer |
| US2588730A (en) * | 1947-05-02 | 1952-03-11 | Wayne R Johnson | Method and apparatus for frequency response measurement |
| US2615129A (en) * | 1947-05-16 | 1952-10-21 | Edwin M Mcmillan | Synchro-cyclotron |
| US2659813A (en) * | 1950-02-11 | 1953-11-17 | Bell Telephone Labor Inc | Frequency modulation repeater |
| US2688730A (en) * | 1950-10-18 | 1954-09-07 | Smith Meeker Engineering Co | Stable frequency generator system |
| US2761065A (en) * | 1953-05-27 | 1956-08-28 | Harris A Robinson | Frequency control system |
| US3202918A (en) * | 1962-10-03 | 1965-08-24 | Armand P Lucchesi | Frequency multiplier |
| US3789302A (en) * | 1972-03-31 | 1974-01-29 | Microwave Ass Inc | Fm heterodyne transmitter |
| US10424278B2 (en) * | 2017-08-02 | 2019-09-24 | Applied Invention, Llc | Bell with subharmonic difference tone |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE399079A (en:Method) * | 1931-09-17 | |||
| BE428896A (en:Method) * | 1937-07-09 |
-
1940
- 1940-02-20 US US319877A patent/US2218524A/en not_active Expired - Lifetime
- 1940-03-30 US US326898A patent/US2250104A/en not_active Expired - Lifetime
-
1941
- 1941-01-02 FR FR869048D patent/FR869048A/fr not_active Expired
- 1941-01-24 FR FR878762D patent/FR878762A/fr not_active Expired
- 1941-03-18 GB GB3689/41A patent/GB546677A/en not_active Expired
- 1941-03-27 DE DEW719D patent/DE882424C/de not_active Expired
- 1941-04-10 BE BE441132D patent/BE441132A/xx unknown
-
1944
- 1944-02-11 NL NL115248A patent/NL67475C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| US2250104A (en) | 1941-07-22 |
| FR869048A (fr) | 1942-01-22 |
| DE882424C (de) | 1953-07-09 |
| FR878762A (fr) | 1943-01-29 |
| US2218524A (en) | 1940-10-22 |
| NL67475C (en:Method) | 1951-03-15 |
| GB546677A (en) | 1942-07-24 |