BE437154A - - Google Patents
Info
- Publication number
- BE437154A BE437154A BE437154DA BE437154A BE 437154 A BE437154 A BE 437154A BE 437154D A BE437154D A BE 437154DA BE 437154 A BE437154 A BE 437154A
- 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
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU223649X | 1938-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE437154A true BE437154A (en:Method) |
Family
ID=19732406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE437154D BE437154A (en:Method) | 1938-12-12 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE437154A (en:Method) |
| CH (1) | CH223649A (en:Method) |
| FR (1) | FR861887A (en:Method) |
| GB (1) | GB519362A (en:Method) |
-
0
- BE BE437154D patent/BE437154A/xx unknown
-
1939
- 1939-01-09 GB GB714/39A patent/GB519362A/en not_active Expired
- 1939-11-25 FR FR861887D patent/FR861887A/fr not_active Expired
- 1939-11-27 CH CH223649D patent/CH223649A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH223649A (fr) | 1942-09-30 |
| GB519362A (en) | 1940-03-21 |
| FR861887A (fr) | 1941-02-19 |