GB484975A - Improvements in or relating to electric lamps - Google Patents
Improvements in or relating to electric lampsInfo
- Publication number
- GB484975A GB484975A GB31641/37A GB3164137A GB484975A GB 484975 A GB484975 A GB 484975A GB 31641/37 A GB31641/37 A GB 31641/37A GB 3164137 A GB3164137 A GB 3164137A GB 484975 A GB484975 A GB 484975A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- electric lamps
- tragacanth
- sintered
- rods
- 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
- 239000005995 Aluminium silicate Substances 0.000 abstract 1
- 241000416162 Astragalus gummifer Species 0.000 abstract 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 abstract 1
- 229920001615 Tragacanth Polymers 0.000 abstract 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 abstract 1
- 229910000323 aluminium silicate Inorganic materials 0.000 abstract 1
- 235000012211 aluminium silicate Nutrition 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229940116362 tragacanth Drugs 0.000 abstract 1
- 235000010487 tragacanth Nutrition 0.000 abstract 1
- 239000000196 tragacanth Substances 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/96—Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope, e.g. for simulating daylight
Landscapes
- Compositions Of Oxide Ceramics (AREA)
- Resistance Heating (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE484975X | 1936-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB484975A true GB484975A (en) | 1938-05-12 |
Family
ID=6543216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31641/37A Expired GB484975A (en) | 1936-11-20 | 1937-11-17 | Improvements in or relating to electric lamps |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2200951A (pm) |
| BE (1) | BE424693A (pm) |
| FR (1) | FR829567A (pm) |
| GB (1) | GB484975A (pm) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2723366A (en) * | 1950-11-13 | 1955-11-08 | Gen Electric | Starting and operating circuit for high pressure gaseous discharge device |
| GB1054423A (pm) * | 1963-04-22 | |||
| US4987342A (en) * | 1989-03-27 | 1991-01-22 | Gte Products Corporation | Self-ballasted glow discharge lamp having indirectly-heated cathode |
-
0
- BE BE424693D patent/BE424693A/xx unknown
-
1937
- 1937-11-13 US US174456A patent/US2200951A/en not_active Expired - Lifetime
- 1937-11-17 GB GB31641/37A patent/GB484975A/en not_active Expired
- 1937-11-19 FR FR829567D patent/FR829567A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR829567A (fr) | 1938-06-30 |
| US2200951A (en) | 1940-05-14 |
| BE424693A (pm) |
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