NL58884C - - Google Patents
Info
- Publication number
- NL58884C NL58884C NL58884DA NL58884C NL 58884 C NL58884 C NL 58884C NL 58884D A NL58884D A NL 58884DA NL 58884 C NL58884 C NL 58884C
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/04—Electron multipliers
- H01J43/06—Electrode arrangements
- H01J43/08—Cathode arrangements
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US292971A US2271985A (en) | 1939-09-01 | 1939-09-01 | Electron discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL58884C true NL58884C (https=) |
Family
ID=23127039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL58884D NL58884C (https=) | 1939-09-01 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2271985A (https=) |
| CH (1) | CH236657A (https=) |
| NL (1) | NL58884C (https=) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR959708A (https=) * | 1941-07-28 | 1950-04-04 | ||
| US2442848A (en) * | 1942-03-09 | 1948-06-08 | Farnsworth Res Corp | Electron control tube |
| US2762916A (en) * | 1950-07-13 | 1956-09-11 | Hartford Nat Bank & Trust Co | Device comprising an electric discharge tube having a concentrated electron beam |
| US3080500A (en) * | 1959-06-22 | 1963-03-05 | Philco Corp | Cathode ray system |
-
0
- NL NL58884D patent/NL58884C/xx active
-
1939
- 1939-09-01 US US292971A patent/US2271985A/en not_active Expired - Lifetime
-
1941
- 1941-04-02 CH CH236657D patent/CH236657A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH236657A (de) | 1945-02-28 |
| US2271985A (en) | 1942-02-03 |