NL25989C - - Google Patents
Info
- Publication number
- NL25989C NL25989C NL25989DA NL25989C NL 25989 C NL25989 C NL 25989C NL 25989D A NL25989D A NL 25989DA NL 25989 C NL25989 C NL 25989C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
- H01J40/02—Details
- H01J40/04—Electrodes
- H01J40/06—Photo-emissive cathodes
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US307082XA | 1928-03-03 | 1928-03-03 | |
| US258706A US1837746A (en) | 1928-03-03 | 1928-03-03 | Photo-electric tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL25989C true NL25989C (en:Method) |
Family
ID=26706375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25989D NL25989C (en:Method) | 1928-03-03 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1837746A (en:Method) |
| GB (1) | GB307082A (en:Method) |
| NL (1) | NL25989C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462245A (en) * | 1942-08-25 | 1949-02-22 | Bell Telephone Labor Inc | Space discharge device |
| US2692348A (en) * | 1951-06-19 | 1954-10-19 | Westinghouse Electric Corp | Discharge device and electrode |
| US3622217A (en) * | 1969-06-30 | 1971-11-23 | Xerox Corp | Light producing system |
-
0
- NL NL25989D patent/NL25989C/xx active
-
1928
- 1928-03-03 US US258706A patent/US1837746A/en not_active Expired - Lifetime
-
1929
- 1929-03-02 GB GB6870/29A patent/GB307082A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1837746A (en) | 1931-12-22 |
| GB307082A (en) | 1930-05-29 |