FR741891A - - Google Patents
Info
- Publication number
- FR741891A FR741891A FR741891DA FR741891A FR 741891 A FR741891 A FR 741891A FR 741891D A FR741891D A FR 741891DA FR 741891 A FR741891 A FR 741891A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
- H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL392796X | 1931-12-23 | ||
| NL401240X | 1932-07-27 | ||
| DE457740X | 1935-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR741891A true FR741891A (de) | 1933-02-22 |
Family
ID=31950151
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR741891D Expired FR741891A (de) | 1931-12-23 | 1932-08-11 | |
| FR47656D Expired FR47656E (fr) | 1931-12-23 | 1936-08-24 | Tube à décharqes électriques |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR47656D Expired FR47656E (fr) | 1931-12-23 | 1936-08-24 | Tube à décharqes électriques |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2056648A (de) |
| BE (1) | BE390343A (de) |
| DE (1) | DE652752C (de) |
| FR (2) | FR741891A (de) |
| GB (3) | GB392796A (de) |
| NL (1) | NL45860C (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2649827A1 (fr) * | 1989-07-13 | 1991-01-18 | Sodern | Dispositif de chauffage d'un tube d'alumine et tube a decharge muni d'un tel dispositif |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2610289A (en) * | 1949-02-23 | 1952-09-09 | Arthur A Brainerd | Enclosed internally heated electric discharge lamp luminaire for variable temperature service |
| US2849598A (en) * | 1953-09-08 | 1958-08-26 | Willis L Lipscomb | Non-glare lighting fixture |
| US3001060A (en) * | 1957-07-22 | 1961-09-19 | Esquire Inc | Floodlight |
| CN108039004A (zh) * | 2017-12-26 | 2018-05-15 | 佛山市道静科技有限公司 | 一种基于无线通讯的智能道路作业车 |
-
1932
- 1932-08-09 BE BE390343D patent/BE390343A/xx unknown
- 1932-08-10 DE DEN34068D patent/DE652752C/de not_active Expired
- 1932-08-11 FR FR741891D patent/FR741891A/fr not_active Expired
- 1932-09-02 GB GB24529/32A patent/GB392796A/en not_active Expired
-
1933
- 1933-03-31 US US663792A patent/US2056648A/en not_active Expired - Lifetime
- 1933-07-12 GB GB19741/33A patent/GB401240A/en not_active Expired
-
1936
- 1936-06-05 GB GB15801/36A patent/GB457740A/en not_active Expired
- 1936-07-25 NL NL79048A patent/NL45860C/xx active
- 1936-08-24 FR FR47656D patent/FR47656E/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2649827A1 (fr) * | 1989-07-13 | 1991-01-18 | Sodern | Dispositif de chauffage d'un tube d'alumine et tube a decharge muni d'un tel dispositif |
Also Published As
| Publication number | Publication date |
|---|---|
| GB392796A (en) | 1933-05-25 |
| GB401240A (en) | 1933-11-09 |
| US2056648A (en) | 1936-10-06 |
| FR47656E (fr) | 1937-06-16 |
| NL45860C (de) | 1939-06-15 |
| BE390343A (de) | 1932-09-23 |
| GB457740A (en) | 1936-12-04 |
| DE652752C (de) | 1937-11-08 |