FR1443799A - Reserve cathode - Google Patents
Reserve cathodeInfo
- Publication number
- FR1443799A FR1443799A FR28541A FR28541A FR1443799A FR 1443799 A FR1443799 A FR 1443799A FR 28541 A FR28541 A FR 28541A FR 28541 A FR28541 A FR 28541A FR 1443799 A FR1443799 A FR 1443799A
- Authority
- FR
- France
- Prior art keywords
- reserve cathode
- reserve
- cathode
- 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
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/28—Dispenser-type cathodes, e.g. L-cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
- H01J3/02—Electron guns
- H01J3/027—Construction of the gun or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electron Beam Exposure (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US39007764A | 1964-08-17 | 1964-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1443799A true FR1443799A (en) | 1966-06-24 |
Family
ID=23540944
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR28541A Expired FR1443799A (en) | 1964-08-17 | 1965-08-17 | Reserve cathode |
Country Status (4)
Country | Link |
---|---|
DE (1) | DE1273076B (en) |
FR (1) | FR1443799A (en) |
GB (1) | GB1046639A (en) |
NL (1) | NL6510765A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3488549A (en) * | 1968-01-15 | 1970-01-06 | Gen Electric | Dispenser cathode material and method of manufacture |
US3590242A (en) * | 1969-06-12 | 1971-06-29 | Gen Electric | Making fused thorium carbide-tungsten cathodes for electron guns |
DE2242986C3 (en) * | 1972-09-01 | 1981-05-07 | Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe | Hot cathode |
JPS5814016B2 (en) * | 1978-03-31 | 1983-03-17 | 株式会社日立製作所 | Substrate metal plate material for directly heated oxide cathode |
JPH0298921A (en) * | 1988-10-05 | 1990-04-11 | Fujitsu Ltd | Electron gun and manufacture thereof aligner equipped with same electron gun and manufacture of semiconductor device using same aligner |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE674258C (en) * | 1934-01-27 | 1939-04-11 | Telefunken Gmbh | Indirectly heated glow cathode for cathode ray tubes and process for their production |
-
1965
- 1965-07-30 GB GB32794/65A patent/GB1046639A/en not_active Expired
- 1965-08-13 DE DEG44416A patent/DE1273076B/en active Pending
- 1965-08-17 NL NL6510765A patent/NL6510765A/xx unknown
- 1965-08-17 FR FR28541A patent/FR1443799A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1046639A (en) | 1966-10-26 |
NL6510765A (en) | 1966-02-18 |
DE1273076B (en) | 1968-07-18 |
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