NL68149C - - Google Patents
Info
- Publication number
- NL68149C NL68149C NL68149DA NL68149C NL 68149 C NL68149 C NL 68149C NL 68149D A NL68149D A NL 68149DA NL 68149 C NL68149 C NL 68149C
- Authority
- NL
- Netherlands
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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Electroplating Methods And Accessories (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL652994X | 1947-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL68149C true NL68149C (es) |
Family
ID=19795138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL68149D NL68149C (es) | 1947-02-08 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2563434A (es) |
| DE (1) | DE886494C (es) |
| FR (1) | FR960822A (es) |
| GB (1) | GB652994A (es) |
| NL (1) | NL68149C (es) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1038660B (de) * | 1954-09-25 | 1958-09-11 | Telefunken Gmbh | Verfahren zum Spannen des Fadens einer direkt oder indirekt geheizten Kathode einer Elektronenroehre |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1740264A (en) * | 1929-12-17 | Vacuum tube | ||
| US1665896A (en) * | 1924-07-17 | 1928-04-10 | Gen Electric | Electron-discharge device |
| BE353118A (es) * | 1927-07-29 | |||
| US1972276A (en) * | 1929-08-03 | 1934-09-04 | Bell Telephone Labor Inc | Electron discharge device |
| US2062751A (en) * | 1930-05-06 | 1936-12-01 | Arcturus Dev Company | Element assembly for electron devices |
| US2047944A (en) * | 1935-04-25 | 1936-07-21 | Hygrade Sylvania Corp | Space discharge tube |
| US2042607A (en) * | 1935-07-17 | 1936-06-02 | Hygrade Sylvania Corp | Electron discharge tube |
| US2100306A (en) * | 1936-09-28 | 1937-11-23 | Hygrade Sylvania Corp | Filament support for radio tubes and the like |
| US2366220A (en) * | 1940-07-20 | 1945-01-02 | Raytheon Mfg Co | Nonmicrophonic tube |
| US2267450A (en) * | 1940-08-24 | 1941-12-23 | Bell Telephone Labor Inc | Electron discharge device |
| US2399005A (en) * | 1943-02-12 | 1946-04-23 | Gen Electric | Method of fabricating electric discharge devices |
-
0
- NL NL68149D patent/NL68149C/xx active
- FR FR960822D patent/FR960822A/fr not_active Expired
- US US2563434D patent/US2563434A/en not_active Expired - Lifetime
-
1948
- 1948-02-05 GB GB3400/48A patent/GB652994A/en not_active Expired
- 1948-11-05 DE DEP20719D patent/DE886494C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2563434A (en) | 1951-08-07 |
| FR960822A (es) | 1950-04-26 |
| DE886494C (de) | 1953-08-13 |
| GB652994A (en) | 1951-05-09 |