NL30240C - - Google Patents
Info
- Publication number
- NL30240C NL30240C NL30240DA NL30240C NL 30240 C NL30240 C NL 30240C NL 30240D A NL30240D A NL 30240DA NL 30240 C NL30240 C NL 30240C
- 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)
- Electron Sources, Ion Sources (AREA)
- Discharge Lamp (AREA)
- Physical Vapour Deposition (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL75324D DE628900C (en) | 1929-06-07 | 1929-06-07 | Process for the production of high-emissivity cathodes in multi-system tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL30240C true NL30240C (en) |
Family
ID=34876961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL30240D NL30240C (en) | 1929-06-07 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US1990041A (en) |
| AT (1) | AT130795B (en) |
| BE (1) | BE370899A (en) |
| DE (1) | DE628900C (en) |
| FR (1) | FR697130A (en) |
| GB (1) | GB353624A (en) |
| NL (1) | NL30240C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2682619A (en) * | 1948-08-19 | 1954-06-29 | Sylvania Electric Prod | Cold cathode gas discharge tube |
| US2635201A (en) * | 1949-09-30 | 1953-04-14 | Rca Corp | Electronic discharge device |
| US2758239A (en) * | 1952-09-13 | 1956-08-07 | Varian Associates | Getter and method of making same |
| US2845324A (en) * | 1954-12-03 | 1958-07-29 | Itt | Gas discharge tube |
| US2834905A (en) * | 1956-03-28 | 1958-05-13 | Bendix Aviat Corp | Electron discharge device |
-
0
- NL NL30240D patent/NL30240C/xx active
- BE BE370899D patent/BE370899A/xx unknown
-
1929
- 1929-06-07 DE DEL75324D patent/DE628900C/en not_active Expired
-
1930
- 1930-06-06 AT AT130795D patent/AT130795B/en active
- 1930-06-06 FR FR697130D patent/FR697130A/en not_active Expired
- 1930-06-07 GB GB17717/30A patent/GB353624A/en not_active Expired
- 1930-06-12 US US460673A patent/US1990041A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE628900C (en) | 1936-04-18 |
| FR697130A (en) | 1931-01-12 |
| US1990041A (en) | 1935-02-05 |
| AT130795B (en) | 1932-12-10 |
| GB353624A (en) | 1931-07-30 |
| BE370899A (en) |