NL41741C - - Google Patents
Info
- Publication number
- NL41741C NL41741C NL41741DA NL41741C NL 41741 C NL41741 C NL 41741C NL 41741D A NL41741D A NL 41741DA NL 41741 C NL41741 C NL 41741C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1221/34A GB431651A (en) | 1934-01-12 | 1934-01-12 | Improvements in or relating to electric discharge devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL41741C true NL41741C (en:Method) |
Family
ID=9718224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL41741D NL41741C (en:Method) | 1934-01-12 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2030437A (en:Method) |
| DE (1) | DE647009C (en:Method) |
| FR (1) | FR784009A (en:Method) |
| GB (1) | GB431651A (en:Method) |
| NL (1) | NL41741C (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3714492A (en) * | 1971-05-03 | 1973-01-30 | Gte Sylvania Inc | Dc fluorescent lamp with improved efficiency |
| FR2386135A1 (fr) * | 1977-03-30 | 1978-10-27 | Gte Sylvania Inc | Perfectionnement apporte aux lampes a vapeur de sodium a haute pression |
| US4598225A (en) * | 1983-02-25 | 1986-07-01 | Gte Products Corporation | Electric lamp with high outer-envelope to inner-envelope wall-thickness ratio |
-
0
- NL NL41741D patent/NL41741C/xx active
-
1934
- 1934-01-12 GB GB1221/34A patent/GB431651A/en not_active Expired
-
1935
- 1935-01-07 US US750A patent/US2030437A/en not_active Expired - Lifetime
- 1935-01-11 FR FR784009D patent/FR784009A/fr not_active Expired
- 1935-01-12 DE DEG89554D patent/DE647009C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB431651A (en) | 1935-07-12 |
| US2030437A (en) | 1936-02-11 |
| DE647009C (de) | 1937-06-25 |
| FR784009A (fr) | 1935-07-20 |