BE491599A - - Google Patents
Info
- Publication number
- BE491599A BE491599A BE491599DA BE491599A BE 491599 A BE491599 A BE 491599A BE 491599D A BE491599D A BE 491599DA BE 491599 A BE491599 A BE 491599A
- 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
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR830220X | 1948-11-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE491599A true BE491599A (pt) |
Family
ID=9285826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE491599D BE491599A (pt) | 1948-11-09 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2659834A (pt) |
| BE (1) | BE491599A (pt) |
| CH (1) | CH280029A (pt) |
| DE (1) | DE830220C (pt) |
| FR (1) | FR1010839A (pt) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3020393A (en) * | 1953-12-31 | 1962-02-06 | Aeg | Base and socket for fluorescent lamps |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1814499A (en) * | 1928-02-17 | 1931-07-14 | Electrons Inc | Circuits for discharge tubes |
| US2097261A (en) * | 1929-04-30 | 1937-10-26 | Spanner Hans Joachim | Lighting device |
| US1990175A (en) * | 1931-05-29 | 1935-02-05 | Gen Electric Vapor Lamp Co | Gaseous electric discharge device |
| US2355258A (en) * | 1941-05-13 | 1944-08-08 | Sylvania Electric Prod | Ultraviolet fluorescent lamp |
| US2292863A (en) * | 1941-08-26 | 1942-08-11 | Gen Electric | Lead-in arrangement |
| US2459543A (en) * | 1947-06-14 | 1949-01-18 | Gen Electric | Base for an electric device |
-
0
- BE BE491599D patent/BE491599A/xx unknown
-
1948
- 1948-11-09 FR FR1010839D patent/FR1010839A/fr not_active Expired
-
1949
- 1949-10-10 CH CH280029D patent/CH280029A/fr unknown
- 1949-10-25 US US123422A patent/US2659834A/en not_active Expired - Lifetime
-
1950
- 1950-08-25 DE DEE1997A patent/DE830220C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH280029A (fr) | 1951-12-31 |
| DE830220C (de) | 1952-02-04 |
| FR1010839A (fr) | 1952-06-16 |
| US2659834A (en) | 1953-11-17 |