BE444348A - - Google Patents
Info
- Publication number
- BE444348A BE444348A BE444348DA BE444348A BE 444348 A BE444348 A BE 444348A BE 444348D A BE444348D A BE 444348DA BE 444348 A BE444348 A BE 444348A
- Authority
- BE
- Belgium
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
- H01J61/33—Special shape of cross-section, e.g. for producing cool spot
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US372273A US2329124A (en) | 1940-12-30 | 1940-12-30 | Gaseous electrical discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE444348A true BE444348A (en) | 1942-03-31 |
Family
ID=23467447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE444348D BE444348A (en) | 1940-12-30 | 1942-02-02 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2329124A (en) |
| BE (1) | BE444348A (en) |
| DE (1) | DE748762C (en) |
| FR (1) | FR878759A (en) |
| NL (1) | NL67953C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187860A (en) * | 1981-05-13 | 1982-11-18 | Hitachi Ltd | Discharge lamp with mercury of very high pressure |
| US5138228A (en) * | 1990-12-31 | 1992-08-11 | Welch Allyn, Inc. | Bulb geometry for low power metal halide lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE696505C (en) * | 1938-12-01 | 1940-09-23 | Patra Patent Treuhand | Electric high-performance overpressure discharge lamp for projection purposes |
-
1940
- 1940-12-30 US US372273A patent/US2329124A/en not_active Expired - Lifetime
-
1941
- 1941-08-02 DE DEP82836D patent/DE748762C/en not_active Expired
- 1941-12-30 FR FR878759D patent/FR878759A/en not_active Expired
-
1942
- 1942-02-02 BE BE444348D patent/BE444348A/xx unknown
- 1942-03-28 NL NL105371A patent/NL67953C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| NL67953C (en) | 1951-06-15 |
| FR878759A (en) | 1943-01-29 |
| DE748762C (en) | 1944-11-09 |
| US2329124A (en) | 1943-09-07 |