NL57714C - - Google Patents
Info
- Publication number
- NL57714C NL57714C NL57714DA NL57714C NL 57714 C NL57714 C NL 57714C NL 57714D A NL57714D A NL 57714DA NL 57714 C NL57714 C NL 57714C
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/14—Solid thermionic cathodes characterised by the material
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE877293X | 1940-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL57714C true NL57714C (OSRAM) |
Family
ID=6818022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL57714D NL57714C (OSRAM) | 1940-12-10 |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR877293A (OSRAM) |
| NL (1) | NL57714C (OSRAM) |
-
0
- NL NL57714D patent/NL57714C/xx active
-
1941
- 1941-11-27 FR FR877293D patent/FR877293A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR877293A (fr) | 1942-12-02 |