NL81188C - - Google Patents
Info
- Publication number
- NL81188C NL81188C NL81188DA NL81188C NL 81188 C NL81188 C NL 81188C NL 81188D A NL81188D A NL 81188DA NL 81188 C NL81188 C NL 81188C
- 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)
- Discharge Lamp (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US205727A US2683837A (en) | 1951-01-12 | 1951-01-12 | Electron emissive composition and method of application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL81188C true NL81188C (fr) |
Family
ID=22763387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL81188D NL81188C (fr) | 1951-01-12 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2683837A (fr) |
| DE (1) | DE926381C (fr) |
| GB (1) | GB732439A (fr) |
| NL (1) | NL81188C (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2975015A (en) * | 1958-07-17 | 1961-03-14 | Internat Telephone & Telegraph | Image converter and method and apparatus for producing the same |
| FR1326443A (fr) * | 1962-03-22 | 1963-05-10 | Lampes Elect Fab Reunies | Procédé et appareil pour remplir une enveloppe de gaz inerte et de vapeur active à une pression relativement élevée par simple introduction sans pompage |
| US3211511A (en) * | 1963-01-30 | 1965-10-12 | Gen Electric | Electric lamp manufacture |
| US3413054A (en) * | 1966-12-30 | 1968-11-26 | Sylvania Electric Prod | Method of fabricating an incandescent lamp and its construction |
| US3749467A (en) * | 1971-03-15 | 1973-07-31 | Duro Test Corp | Fluorescent lamps and method of manufacturing the same |
| US3978563A (en) * | 1973-12-04 | 1976-09-07 | U.S. Philips Corporation | Method of manufacturing an electric discharge tube having an oxide cathode |
| US4836816A (en) * | 1988-05-06 | 1989-06-06 | Gte Products Corporation | Method of treating tungsten cathodes |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1691446A (en) * | 1925-03-28 | 1928-11-13 | Westinghouse Lamp Co | Electron-discharge device with oxide-coated filament |
| US1795918A (en) * | 1926-09-11 | 1931-03-10 | John Stogdell Stokes | Process for reducing the viscosity of nitrocellulose solutions |
| US2310866A (en) * | 1941-02-25 | 1943-02-09 | Du Pont | Luminescent tube |
| US2363028A (en) * | 1941-12-16 | 1944-11-21 | Carl J Warnke | Cathode filament |
-
0
- NL NL81188D patent/NL81188C/xx active
-
1951
- 1951-01-12 US US205727A patent/US2683837A/en not_active Expired - Lifetime
-
1952
- 1952-01-08 GB GB584/52A patent/GB732439A/en not_active Expired
- 1952-01-11 DE DEI5408A patent/DE926381C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE926381C (de) | 1955-04-14 |
| US2683837A (en) | 1954-07-13 |
| GB732439A (en) | 1955-06-22 |