FR743742A - - Google Patents
Info
- Publication number
- FR743742A FR743742A FR743742DA FR743742A FR 743742 A FR743742 A FR 743742A FR 743742D A FR743742D A FR 743742DA FR 743742 A FR743742 A FR 743742A
- 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
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL404101X | 1931-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743742A true FR743742A (US06521211-20030218-C00004.png) | 1933-04-05 |
Family
ID=19785932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743742D Expired FR743742A (US06521211-20030218-C00004.png) | 1931-10-03 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE597744C (US06521211-20030218-C00004.png) |
| FR (1) | FR743742A (US06521211-20030218-C00004.png) |
| GB (1) | GB404101A (US06521211-20030218-C00004.png) |
| NL (1) | NL36696C (US06521211-20030218-C00004.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE910934C (de) * | 1937-02-02 | 1954-05-06 | Jean Jacques Brodbeck | Elektrische Mischlichtlampe |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4499396A (en) * | 1982-08-18 | 1985-02-12 | Gte Products Corporation | Metal halide arc discharge lamp with means for suppressing convection currents within the outer envelope and methods of operating same |
| US4490649A (en) * | 1982-10-20 | 1984-12-25 | General Electric Company | Thermal baffle inside a discharge lamp |
-
0
- FR FR743742D patent/FR743742A/fr not_active Expired
- NL NL36696D patent/NL36696C/xx active
-
1931
- 1931-11-18 DE DEN32970D patent/DE597744C/de not_active Expired
-
1932
- 1932-10-03 GB GB27416/32A patent/GB404101A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE910934C (de) * | 1937-02-02 | 1954-05-06 | Jean Jacques Brodbeck | Elektrische Mischlichtlampe |
Also Published As
| Publication number | Publication date |
|---|---|
| GB404101A (en) | 1934-01-11 |
| NL36696C (US06521211-20030218-C00004.png) | |
| DE597744C (de) | 1934-05-30 |
