NL30977C - - Google Patents
Info
- Publication number
- NL30977C NL30977C NL30977DA NL30977C NL 30977 C NL30977 C NL 30977C NL 30977D A NL30977D A NL 30977DA NL 30977 C NL30977 C NL 30977C
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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
- H01J1/24—Insulating layer or body located between heater and emissive material
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US276340A US1871343A (en) | 1928-05-09 | 1928-05-09 | Heater element for electron emission devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL30977C true NL30977C (en:Method) |
Family
ID=23056255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL30977D NL30977C (en:Method) | 1928-05-09 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1871343A (en:Method) |
| BE (1) | BE360639A (en:Method) |
| NL (1) | NL30977C (en:Method) |
-
0
- BE BE360639D patent/BE360639A/xx unknown
- NL NL30977D patent/NL30977C/xx active
-
1928
- 1928-05-09 US US276340A patent/US1871343A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE360639A (en:Method) | |
| US1871343A (en) | 1932-08-09 |