GB488352A - Improved devices comprising at least one super-pressure mercury vapour discharge tube - Google Patents
Improved devices comprising at least one super-pressure mercury vapour discharge tubeInfo
- Publication number
- GB488352A GB488352A GB32408/37A GB3240837A GB488352A GB 488352 A GB488352 A GB 488352A GB 32408/37 A GB32408/37 A GB 32408/37A GB 3240837 A GB3240837 A GB 3240837A GB 488352 A GB488352 A GB 488352A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- super
- discharge tube
- pressure mercury
- mercury vapour
- Prior art date
- 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
- H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
- H01J61/822—High-pressure mercury lamps
Landscapes
- Glass Compositions (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
488,352. Glass manufacture. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 24, 1937, No. 32408. Convention date, Nov. 27, 1936. Drawings to Specification. [Class 56] [Also in Groups XL and XI] A glass absorbing all radiations below 4500Š contains SiO2 64À4 per cent, Na2O 13À9 per cent, PbO 15À1 per cent, ZnO 2À3 per cent, BaO 4À3 per cent, and is coloured yellow by addition of 0À5 per cent lead chromate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE488352X | 1936-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB488352A true GB488352A (en) | 1938-07-05 |
Family
ID=6543785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32408/37A Expired GB488352A (en) | 1936-11-27 | 1937-11-24 | Improved devices comprising at least one super-pressure mercury vapour discharge tube |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2223470A (en) |
| BE (1) | BE424837A (en) |
| FR (1) | FR829923A (en) |
| GB (1) | GB488352A (en) |
| NL (1) | NL50120C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2595520A (en) * | 1947-03-26 | 1952-05-06 | John J Guerin | Enclosed fluorescent lighting device |
| DE1002725B (en) * | 1954-06-26 | 1957-02-21 | Wirth Arno H Fa | Device for electrostatic flocking against gravity |
| US3219810A (en) * | 1961-08-10 | 1965-11-23 | Inland Steel Products Company | Light transmitting and heat transferring apparatus |
| GB1515086A (en) * | 1975-05-22 | 1978-06-21 | Sun Chemical Corp | Ultraviolet lamp assembly |
-
0
- NL NL50120D patent/NL50120C/xx active
- BE BE424837D patent/BE424837A/xx unknown
-
1937
- 1937-11-16 US US174860A patent/US2223470A/en not_active Expired - Lifetime
- 1937-11-24 GB GB32408/37A patent/GB488352A/en not_active Expired
- 1937-11-26 FR FR829923D patent/FR829923A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL50120C (en) | |
| BE424837A (en) | |
| US2223470A (en) | 1940-12-03 |
| FR829923A (en) | 1938-07-11 |
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