BE476381A - - Google Patents
Info
- Publication number
- BE476381A BE476381A BE476381DA BE476381A BE 476381 A BE476381 A BE 476381A BE 476381D A BE476381D A BE 476381DA BE 476381 A BE476381 A BE 476381A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- H01J9/042—Manufacture, activation of the emissive part
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0019—Chemical composition and manufacture
- H01J2893/0022—Manufacture
- H01J2893/0023—Manufacture carbonising and other surface treatments
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2683246A GB616487A (en) | 1946-09-06 | 1946-09-06 | Improvements in or relating to electron emission filaments |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE476381A true BE476381A (en) |
Family
ID=10249973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE476381D BE476381A (en) | 1946-09-06 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE476381A (en) |
| ES (1) | ES179643A1 (en) |
| FR (1) | FR952894A (en) |
| GB (1) | GB616487A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2838020C3 (en) * | 1978-08-31 | 1987-06-19 | Siemens AG, 1000 Berlin und 8000 München | Directly heated cathode for transmitter tubes with coaxial electrode structure |
| US4424044A (en) * | 1982-04-23 | 1984-01-03 | Raytheon Company | Method of fabricating cathode electrodes |
-
0
- BE BE476381D patent/BE476381A/xx unknown
-
1946
- 1946-09-06 GB GB2683246A patent/GB616487A/en not_active Expired
-
1947
- 1947-09-08 ES ES179643A patent/ES179643A1/en not_active Expired
- 1947-09-11 FR FR952894D patent/FR952894A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR952894A (en) | 1949-11-25 |
| ES179643A1 (en) | 1947-10-16 |
| GB616487A (en) | 1949-01-21 |