BE428235A - - Google Patents
Info
- Publication number
- BE428235A BE428235A BE428235DA BE428235A BE 428235 A BE428235 A BE 428235A BE 428235D A BE428235D A BE 428235DA BE 428235 A BE428235 A BE 428235A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/58—Arrangements for focusing or reflecting ray or beam
- H01J29/62—Electrostatic lenses
- H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
- H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE838371X | 1937-05-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE428235A true BE428235A (en:Method) |
Family
ID=6761640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE428235D BE428235A (en:Method) | 1937-05-24 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE428235A (en:Method) |
| FR (1) | FR838371A (en:Method) |
-
0
- BE BE428235D patent/BE428235A/xx unknown
-
1938
- 1938-05-24 FR FR838371D patent/FR838371A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR838371A (fr) | 1939-03-03 |