NL23841C - - Google Patents
Info
- Publication number
- NL23841C NL23841C NL23841DA NL23841C NL 23841 C NL23841 C NL 23841C NL 23841D A NL23841D A NL 23841DA NL 23841 C NL23841 C NL 23841C
- 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
- H01J1/15—Cathodes heated directly by an electric current
- H01J1/18—Supports; Vibration-damping arrangements
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1897255X | 1928-03-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL23841C true NL23841C (https=) |
Family
ID=19873254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL23841D NL23841C (https=) | 1928-03-30 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1897255A (https=) |
| FR (1) | FR669389A (https=) |
| NL (1) | NL23841C (https=) |
-
0
- NL NL23841D patent/NL23841C/xx active
-
1929
- 1929-02-08 FR FR669389D patent/FR669389A/fr not_active Expired
- 1929-03-16 US US347505A patent/US1897255A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1897255A (en) | 1933-02-14 |
| FR669389A (fr) | 1929-11-15 |