NL72539C - - Google Patents
Info
- Publication number
- NL72539C NL72539C NL72539DA NL72539C NL 72539 C NL72539 C NL 72539C NL 72539D A NL72539D A NL 72539DA NL 72539 C NL72539 C NL 72539C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J21/00—Vacuum tubes
- H01J21/36—Tubes with flat electrodes, e.g. disc electrode
-
- 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
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US666099XA | 1948-08-02 | 1948-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL72539C true NL72539C (en:Method) |
Family
ID=22070586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL72539D NL72539C (en:Method) | 1948-08-02 |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB666099A (en:Method) |
| NL (1) | NL72539C (en:Method) |
-
0
- NL NL72539D patent/NL72539C/xx active
-
1949
- 1949-07-29 GB GB19994/49A patent/GB666099A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB666099A (en) | 1952-02-06 |