NL87649C - - Google Patents
Info
- Publication number
- NL87649C NL87649C NL87649DA NL87649C NL 87649 C NL87649 C NL 87649C NL 87649D A NL87649D A NL 87649DA NL 87649 C NL87649 C NL 87649C
- Authority
- NL
- Netherlands
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
- H01J29/84—Arrangements for removing or diverting unwanted particles, e.g. for negative ions or fringing electrons; Arrangements for velocity or mass selection
- H01J29/845—Arrangements for removing or diverting unwanted particles, e.g. for negative ions or fringing electrons; Arrangements for velocity or mass selection by means of magnetic systems
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US343195A US2723362A (en) | 1953-03-18 | 1953-03-18 | Electron gun of the ion trap type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL87649C true NL87649C (https=) |
Family
ID=23345079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL87649D NL87649C (https=) | 1953-03-18 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2723362A (https=) |
| BE (1) | BE527357A (https=) |
| FR (1) | FR1104378A (https=) |
| GB (1) | GB747707A (https=) |
| NL (1) | NL87649C (https=) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE548096A (https=) * | 1953-05-30 | |||
| US3119988A (en) * | 1955-12-01 | 1964-01-28 | Leonard D Barry | Magnetic recorder for symbols |
| US2964880A (en) * | 1956-05-25 | 1960-12-20 | Fivre Valvole Radio Elett Spa | Process for preparing glass elements |
| US3027479A (en) * | 1958-06-27 | 1962-03-27 | Rca Corp | Electron guns |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2188579A (en) * | 1933-05-27 | 1940-01-30 | Loewe Radio Inc | Cathode ray tube, more particularly for television purposes |
| DE973258C (de) * | 1938-03-08 | 1959-12-31 | Siemens Ag | Magnetische Polschuhlinse kleiner Brennweite fuer elektronenoptische Vergroesserungen in Elektronenmikroskopen |
| BE470212A (https=) * | 1946-01-24 | |||
| US2496127A (en) * | 1947-02-05 | 1950-01-31 | Rca Corp | Electron gun for cathode-ray tubes |
| US2619607A (en) * | 1951-03-10 | 1952-11-25 | Glaser Steers Corp | Internal focusing device |
-
0
- NL NL87649D patent/NL87649C/xx active
- BE BE527357D patent/BE527357A/xx unknown
-
1953
- 1953-03-18 US US343195A patent/US2723362A/en not_active Expired - Lifetime
-
1954
- 1954-03-16 FR FR1104378D patent/FR1104378A/fr not_active Expired
- 1954-03-17 GB GB7791/54A patent/GB747707A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE527357A (https=) | |
| FR1104378A (fr) | 1955-11-18 |
| US2723362A (en) | 1955-11-08 |
| GB747707A (en) | 1956-04-11 |