NL19245C - - Google Patents
Info
- Publication number
- NL19245C NL19245C NL19245DA NL19245C NL 19245 C NL19245 C NL 19245C NL 19245D A NL19245D A NL 19245DA NL 19245 C NL19245 C NL 19245C
- 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 |
|---|---|---|---|
| NL229622X | 1924-02-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL19245C true NL19245C (ja) |
Family
ID=19779857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL19245D NL19245C (ja) | 1924-02-18 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE470421C (ja) |
| FR (1) | FR583860A (ja) |
| GB (1) | GB229622A (ja) |
| NL (1) | NL19245C (ja) |
-
0
- NL NL19245D patent/NL19245C/xx active
-
1924
- 1924-06-29 DE DEN23347D patent/DE470421C/de not_active Expired
- 1924-07-19 FR FR583860D patent/FR583860A/fr not_active Expired
- 1924-07-28 GB GB18037/24A patent/GB229622A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB229622A (en) | 1925-06-25 |
| FR583860A (fr) | 1925-01-23 |
| DE470421C (de) | 1929-01-21 |