BE495242A - - Google Patents
Info
- Publication number
- BE495242A BE495242A BE495242DA BE495242A BE 495242 A BE495242 A BE 495242A BE 495242D A BE495242D A BE 495242DA BE 495242 A BE495242 A BE 495242A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/02—Tubes with a single discharge path
- H01J21/06—Tubes with a single discharge path having electrostatic control means only
- H01J21/065—Devices for short wave tubes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/20—Tubes with more than one discharge path; Multiple tubes, e.g. double diode, triode-hexode
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B9/00—Generation of oscillations using transit-time effects
- H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
- H03F1/14—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
- H03F1/16—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means in discharge-tube amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/003—Tubes with plural electrode systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US127899A US2163247A (en) | 1937-02-26 | 1937-02-26 | Electron discharge apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE495242A true BE495242A (ru) | 1950-08-16 |
Family
ID=22432530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE495242D BE495242A (ru) | 1937-02-26 | 1950-04-19 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2163247A (ru) |
| BE (1) | BE495242A (ru) |
| DE (1) | DE706668C (ru) |
| FR (2) | FR834005A (ru) |
| GB (1) | GB495242A (ru) |
| NL (1) | NL49225C (ru) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5007135A (en) * | 1990-06-18 | 1991-04-16 | Robert Rigsby | Plant growing receptacle |
| US5383302A (en) * | 1992-10-08 | 1995-01-24 | Hill; Ronald F. | Apparatus and method for growing strongly-rooted trees, and preventing root damage to hardscapes |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2456579A (en) * | 1942-10-30 | 1948-12-14 | Rca Corp | Electron discharge device for ultra high frequencies |
| US2423443A (en) * | 1942-12-31 | 1947-07-08 | Bell Telephone Labor Inc | High power electronic discharge device for generating ultra high frequency radiations |
| US2437027A (en) * | 1943-01-12 | 1948-03-02 | John H Homrighous | Time division multiplex communication system |
| US2533280A (en) * | 1943-03-16 | 1950-12-12 | Int Standard Electric Corp | Multiunit vacuum tube |
-
1937
- 1937-02-26 US US127899A patent/US2163247A/en not_active Expired - Lifetime
-
1938
- 1938-01-21 GB GB2069/38A patent/GB495242A/en not_active Expired
- 1938-02-18 FR FR834005D patent/FR834005A/fr not_active Expired
- 1938-02-18 FR FR834004D patent/FR834004A/fr not_active Expired
- 1938-02-19 DE DEI60573D patent/DE706668C/de not_active Expired
- 1938-02-24 NL NL49225D patent/NL49225C/xx active
-
1950
- 1950-04-19 BE BE495242D patent/BE495242A/xx unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5007135A (en) * | 1990-06-18 | 1991-04-16 | Robert Rigsby | Plant growing receptacle |
| US5383302A (en) * | 1992-10-08 | 1995-01-24 | Hill; Ronald F. | Apparatus and method for growing strongly-rooted trees, and preventing root damage to hardscapes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE706668C (de) | 1941-05-31 |
| US2163247A (en) | 1939-06-20 |
| NL49225C (ru) | 1940-09-16 |
| FR834004A (fr) | 1938-11-09 |
| FR834005A (fr) | 1938-11-09 |
| GB495242A (en) | 1938-11-09 |