NL137189C - - Google Patents
Info
- Publication number
- NL137189C NL137189C NL137189DA NL137189C NL 137189 C NL137189 C NL 137189C NL 137189D A NL137189D A NL 137189DA NL 137189 C NL137189 C NL 137189C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B13/00—Special devices for ventilating gasproof shelters
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Circuits Of Receivers In General (AREA)
- Near-Field Transmission Systems (AREA)
- Electrotherapy Devices (AREA)
- Radar Systems Or Details Thereof (AREA)
- Electric Clocks (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US488181A US2419569A (en) | 1943-05-24 | 1943-05-24 | Radio receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL137189C true NL137189C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=23938645
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL137188D NL137188C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1943-05-24 | ||
| NL137189D NL137189C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1943-05-24 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL137188D NL137188C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1943-05-24 |
Country Status (6)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2552496A (en) * | 1942-11-30 | 1951-05-08 | Rinia Herre | Receiver for modulated radiofrequency pulses |
| GB585613A (en) * | 1944-09-15 | 1947-02-13 | Standard Telephones Cables Ltd | Improvements in super-regenerative receivers for electromagnetic waves |
| US2532221A (en) * | 1945-01-16 | 1950-11-28 | Philco Corp | Pulse modulated echo ranging system |
| US2515282A (en) * | 1945-02-17 | 1950-07-18 | Everard M Williams | Portable interference transmitter |
| US2525634A (en) * | 1945-12-07 | 1950-10-10 | Rca Corp | Pulse communication system |
| US2553219A (en) * | 1946-04-02 | 1951-05-15 | Philco Corp | Superregenerator |
| US2588730A (en) * | 1947-05-02 | 1952-03-11 | Wayne R Johnson | Method and apparatus for frequency response measurement |
| US2623173A (en) * | 1947-06-05 | 1952-12-23 | Gen Teleradio Inc | Television phase-actuated control equipment |
| US2511409A (en) * | 1947-10-22 | 1950-06-13 | Hallicrafters Co | Superregenerative circuit |
| US2656465A (en) * | 1948-05-12 | 1953-10-20 | Zenith Radio Corp | Synchronizing system |
| US2704812A (en) * | 1949-05-26 | 1955-03-22 | Gen Electric | Synchronizing system |
| US2966953A (en) * | 1955-11-14 | 1961-01-03 | Jersey Prod Res Co | Apparatus for presenting seismic data |
| US3195069A (en) * | 1960-07-20 | 1965-07-13 | Itt | Signal generator having a controllable frequency characteristic |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1919985A (en) * | 1931-07-23 | 1933-07-25 | Gen Electric | Cathode ray oscillograph sweep circuit |
| NL88393C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1937-06-18 | |||
| US2323596A (en) * | 1941-06-17 | 1943-07-06 | Rca Corp | Frequency modulation receiver |
-
0
- NL NL137188D patent/NL137188C/xx active
- NL NL137189D patent/NL137189C/xx active
- FR FR57767D patent/FR57767E/fr not_active Expired
- BE BE480693D patent/BE480693A/xx unknown
- BE BE481275D patent/BE481275A/xx unknown
-
1943
- 1943-05-24 US US488181A patent/US2419569A/en not_active Expired - Lifetime
-
1944
- 1944-10-18 GB GB20199/44A patent/GB600255A/en not_active Expired
-
1945
- 1945-01-15 GB GB1233/45A patent/GB600259A/en not_active Expired
-
1947
- 1947-08-05 FR FR951075D patent/FR951075A/fr not_active Expired
-
1948
- 1948-02-20 ES ES0182493A patent/ES182493A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL137188C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| FR57767E (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1953-09-09 |
| GB600255A (en) | 1948-04-05 |
| BE480693A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| ES182493A1 (es) | 1948-04-16 |
| GB600259A (en) | 1948-04-05 |
| BE481275A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | |
| US2419569A (en) | 1947-04-29 |
| FR951075A (fr) | 1949-10-14 |