NL28979C - - Google Patents
Info
- Publication number
- NL28979C NL28979C NL28979DA NL28979C NL 28979 C NL28979 C NL 28979C NL 28979D A NL28979D A NL 28979DA NL 28979 C NL28979 C NL 28979C
- 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)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Solid Thermionic Cathode (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HU341826X | 1929-12-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL28979C true NL28979C (xx) |
Family
ID=10978844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL28979D NL28979C (xx) | 1929-12-23 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE370532A (xx) |
| DE (1) | DE539890C (xx) |
| FR (1) | FR696589A (xx) |
| GB (1) | GB341826A (xx) |
| NL (1) | NL28979C (xx) |
-
0
- NL NL28979D patent/NL28979C/xx active
- BE BE370532D patent/BE370532A/xx unknown
-
1930
- 1930-05-14 DE DE1930539890D patent/DE539890C/de not_active Expired
- 1930-05-16 GB GB15108/30A patent/GB341826A/en not_active Expired
- 1930-06-03 FR FR696589D patent/FR696589A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE370532A (xx) | |
| FR696589A (fr) | 1931-01-05 |
| GB341826A (en) | 1931-01-22 |
| DE539890C (de) | 1931-12-03 |