BE380781A - - Google Patents
Info
- Publication number
- BE380781A BE380781A BE380781DA BE380781A BE 380781 A BE380781 A BE 380781A BE 380781D A BE380781D A BE 380781DA BE 380781 A BE380781 A BE 380781A
- Authority
- BE
- Belgium
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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE380835X | 1930-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE380781A true BE380781A (en) |
Family
ID=6349618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE380781D BE380781A (en) | 1930-06-25 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1893935A (en) |
| BE (1) | BE380781A (en) |
| FR (1) | FR719069A (en) |
| GB (1) | GB380835A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2861014A (en) * | 1956-08-14 | 1958-11-18 | Gen Lab Associates Inc | Process of making a semi-conductive ceramic body |
-
0
- BE BE380781D patent/BE380781A/xx unknown
-
1931
- 1931-06-22 US US545998A patent/US1893935A/en not_active Expired - Lifetime
- 1931-06-24 GB GB18234/31A patent/GB380835A/en not_active Expired
- 1931-06-24 FR FR719069D patent/FR719069A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR719069A (en) | 1932-02-01 |
| GB380835A (en) | 1932-09-26 |
| US1893935A (en) | 1933-01-10 |