NL16868C - - Google Patents
Info
- Publication number
- NL16868C NL16868C NL16868DA NL16868C NL 16868 C NL16868 C NL 16868C NL 16868D A NL16868D A NL 16868DA NL 16868 C NL16868 C NL 16868C
- 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)
- Catalysts (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB170824A GB230226A (en) | 1924-01-22 | 1924-01-22 | Improvements relating to thermionic valves or electron discharge tubes particularly for wireless signalling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL16868C true NL16868C (forum.php) |
Family
ID=9726628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL16868D NL16868C (forum.php) | 1924-01-22 |
Country Status (3)
| Country | Link |
|---|---|
| FR (1) | FR592915A (forum.php) |
| GB (1) | GB230226A (forum.php) |
| NL (1) | NL16868C (forum.php) |
-
0
- NL NL16868D patent/NL16868C/xx active
-
1924
- 1924-01-22 GB GB170824A patent/GB230226A/en not_active Expired
-
1925
- 1925-01-20 FR FR592915D patent/FR592915A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR592915A (fr) | 1925-08-12 |
| GB230226A (en) | 1925-03-12 |