NL74346C - - Google Patents
Info
- Publication number
- NL74346C NL74346C NL74346DA NL74346C NL 74346 C NL74346 C NL 74346C NL 74346D A NL74346D A NL 74346DA NL 74346 C NL74346 C NL 74346C
- 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)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL260730X | 1946-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL74346C true NL74346C (de) |
Family
ID=19781496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL74346D NL74346C (de) | 1946-11-13 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2464874A (de) |
| BE (1) | BE477288A (de) |
| CH (1) | CH260730A (de) |
| DE (1) | DE809219C (de) |
| FR (1) | FR955482A (de) |
| GB (1) | GB642755A (de) |
| NL (1) | NL74346C (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE956256C (de) * | 1953-05-31 | 1957-01-17 | Siemens Ag | Verfahren zur Erhoehung der Schichtleitfaehigkeit von Oxydkathoden |
| NL101810C (de) * | 1955-02-12 | |||
| US2952812A (en) * | 1956-01-27 | 1960-09-13 | California Research Corp | Pulse modulation function multiplier |
| DE1057231B (de) * | 1956-03-03 | 1959-05-14 | Patra Patent Treuhand | Aktivierte Gluehelektrode fuer elektrische Entladungslampen |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2362510A (en) * | 1942-01-03 | 1944-11-14 | Raytheon Mfg Co | Emissive filament and method of making |
-
0
- BE BE477288D patent/BE477288A/xx unknown
- NL NL74346D patent/NL74346C/xx active
- FR FR955482D patent/FR955482A/fr not_active Expired
-
1947
- 1947-11-10 GB GB29854/47A patent/GB642755A/en not_active Expired
- 1947-11-11 CH CH260730D patent/CH260730A/de unknown
- 1947-12-10 US US790924A patent/US2464874A/en not_active Expired - Lifetime
-
1948
- 1948-11-05 DE DEP20718A patent/DE809219C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH260730A (de) | 1949-03-31 |
| GB642755A (en) | 1950-09-13 |
| FR955482A (de) | 1950-01-14 |
| DE809219C (de) | 1951-07-26 |
| BE477288A (de) | |
| US2464874A (en) | 1949-03-22 |