BE363695A - - Google Patents
Info
- Publication number
- BE363695A BE363695A BE363695DA BE363695A BE 363695 A BE363695 A BE 363695A BE 363695D A BE363695D A BE 363695DA BE 363695 A BE363695 A BE 363695A
- 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
- H01J61/38—Devices for influencing the colour or wavelength of the light
- H01J61/40—Devices for influencing the colour or wavelength of the light by light filters; by coloured coatings in or on the envelope
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL681710X | 1928-10-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE363695A true BE363695A (en:Method) |
Family
ID=19805284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE363695D BE363695A (en:Method) | 1928-10-02 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE363695A (en:Method) |
| FR (1) | FR681710A (en:Method) |
-
0
- BE BE363695D patent/BE363695A/xx unknown
-
1929
- 1929-09-12 FR FR681710D patent/FR681710A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR681710A (fr) | 1930-05-19 |