GB544225A - Improvements in electric discharge tubes comprising secondary emission electrodes - Google Patents
Improvements in electric discharge tubes comprising secondary emission electrodesInfo
- Publication number
- GB544225A GB544225A GB9704/40A GB970440A GB544225A GB 544225 A GB544225 A GB 544225A GB 9704/40 A GB9704/40 A GB 9704/40A GB 970440 A GB970440 A GB 970440A GB 544225 A GB544225 A GB 544225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electric discharge
- discharge tubes
- secondary emission
- emission electrodes
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
- H01J43/02—Tubes in which one or a few electrodes are secondary-electron emitting electrodes
Abstract
544,225. Electron multipliers. MULLARD RADIO VALVE CO., Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). June 3, 1940, No. 9704. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 7, 1940.] Drawings to Specification. [Class 39 (i)] The subject-matter of this Specification is identical with that of Specification 629,881, [Group XL (a)].
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL217330X | 1939-06-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB544225A true GB544225A (en) | 1942-04-02 |
Family
ID=19779131
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9704/40A Expired GB544225A (en) | 1939-06-06 | 1940-06-03 | Improvements in electric discharge tubes comprising secondary emission electrodes |
GB35179/47A Expired GB629881A (en) | 1939-06-06 | 1947-12-31 | Improvements in electric discharge tubes comprising secondary emission electrodes |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB35179/47A Expired GB629881A (en) | 1939-06-06 | 1947-12-31 | Improvements in electric discharge tubes comprising secondary emission electrodes |
Country Status (7)
Country | Link |
---|---|
US (1) | US2340631A (en) |
BE (1) | BE440174A (en) |
CH (1) | CH217330A (en) |
DE (1) | DE1074764B (en) |
FR (1) | FR868395A (en) |
GB (2) | GB544225A (en) |
NL (1) | NL52549C (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE477662A (en) * | 1939-07-28 | |||
BE450216A (en) * | 1942-04-17 | |||
US2674661A (en) * | 1948-08-12 | 1954-04-06 | Rca Corp | Electron multiplier device |
US2909702A (en) * | 1948-10-01 | 1959-10-20 | Siemens Ag | Discharge vessel cooled by radiation |
US2675431A (en) * | 1949-08-18 | 1954-04-13 | Nat Union Radio Corp | Transit time compensated multiplier tube |
-
0
- BE BE440174D patent/BE440174A/xx unknown
- DE DENDAT1074764D patent/DE1074764B/en active Pending
- NL NL52549D patent/NL52549C/xx active
-
1940
- 1940-06-03 GB GB9704/40A patent/GB544225A/en not_active Expired
- 1940-12-26 FR FR868395D patent/FR868395A/en not_active Expired
- 1940-12-31 CH CH217330D patent/CH217330A/en unknown
-
1941
- 1941-08-21 US US407735A patent/US2340631A/en not_active Expired - Lifetime
-
1947
- 1947-12-31 GB GB35179/47A patent/GB629881A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2340631A (en) | 1944-02-01 |
FR868395A (en) | 1941-12-29 |
DE1074764B (en) | 1960-02-04 |
BE440174A (en) | |
GB629881A (en) | 1949-09-29 |
NL52549C (en) | |
CH217330A (en) | 1941-10-15 |
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