FR950546A - Further development of cathodes for electric discharge lamps - Google Patents
Further development of cathodes for electric discharge lampsInfo
- Publication number
- FR950546A FR950546A FR950546DA FR950546A FR 950546 A FR950546 A FR 950546A FR 950546D A FR950546D A FR 950546DA FR 950546 A FR950546 A FR 950546A
- Authority
- FR
- France
- Prior art keywords
- cathodes
- electric discharge
- further development
- discharge lamps
- lamps
- 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
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US366855A US2258158A (en) | 1940-11-23 | 1940-11-23 | Electric discharge lamp cathode |
Publications (1)
Publication Number | Publication Date |
---|---|
FR950546A true FR950546A (en) | 1949-09-29 |
Family
ID=23444848
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR950546D Expired FR950546A (en) | 1940-11-23 | 1947-07-31 | Further development of cathodes for electric discharge lamps |
Country Status (5)
Country | Link |
---|---|
US (1) | US2258158A (en) |
BE (1) | BE481787A (en) |
FR (1) | FR950546A (en) |
GB (1) | GB647954A (en) |
NL (1) | NL76841C (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2424518A (en) * | 1944-12-04 | 1947-07-22 | Gen Electric | Coil electrode |
BE482916A (en) * | 1947-06-05 | |||
US2560933A (en) * | 1949-02-17 | 1951-07-17 | Sylvania Electric Prod | Lamp electrode |
US2663816A (en) * | 1949-09-28 | 1953-12-22 | Sylvania Electric Prod | Electric discharge lamp |
US2657325A (en) * | 1950-12-23 | 1953-10-27 | Sylvania Electric Prod | Electrode for electric discharge lamps |
US2785093A (en) * | 1954-06-29 | 1957-03-12 | Bell Telephone Labor Inc | Method of preparing cathodes for discharge devices |
US2917650A (en) * | 1955-06-29 | 1959-12-15 | Hyperion Sa | Electrode for discharge tubes |
US2935637A (en) * | 1957-03-05 | 1960-05-03 | Thomas M Cortese | Fluorescent lamp |
US2961568A (en) * | 1957-11-14 | 1960-11-22 | Gen Electric | Filament joint for incandescent lamps |
US3247699A (en) * | 1962-01-12 | 1966-04-26 | Westinghouse Electric Corp | Manufacture of multiply-coiled electrodes for discharge devices |
US3312856A (en) * | 1963-03-26 | 1967-04-04 | Gen Electric | Rhenium supported metallic boride cathode emitters |
US3546519A (en) * | 1968-08-21 | 1970-12-08 | Tokyo Shibaura Electric Co | Fluorescent lamps with coil electrodes and electrode support structure |
US4523125A (en) * | 1981-07-13 | 1985-06-11 | General Electric Company | Fluorescent lamp electrodes |
US5680003A (en) * | 1995-05-19 | 1997-10-21 | General Electric Company | Coiled-coil filament design for an incandescent lamp |
-
0
- BE BE481787D patent/BE481787A/xx unknown
- NL NL76841D patent/NL76841C/xx active
-
1940
- 1940-11-23 US US366855A patent/US2258158A/en not_active Expired - Lifetime
-
1947
- 1947-07-29 GB GB20499/47A patent/GB647954A/en not_active Expired
- 1947-07-31 FR FR950546D patent/FR950546A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL76841C (en) | |
US2258158A (en) | 1941-10-07 |
BE481787A (en) | |
GB647954A (en) | 1950-12-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR950546A (en) | Further development of cathodes for electric discharge lamps | |
FR860095A (en) | Electric discharge lamp | |
FR922053A (en) | improved electrode for discharge lamp | |
FR921728A (en) | improved electrode for discharge lamp | |
FR874589A (en) | Improvements made to electric discharge tubes | |
FR878759A (en) | Improvements to discharge lamps | |
FR880515A (en) | Improvements to high pressure electric discharge lamps | |
FR880066A (en) | Electric discharge vessel | |
FR872405A (en) | Improvements to thoriated cathodes | |
FR875748A (en) | Cathode for electric discharge tubes | |
FR872747A (en) | Improvements to electric discharge lamps | |
FR872044A (en) | Threaded base for electric lamps | |
FR873205A (en) | Cathode for electric discharge tube | |
FR864535A (en) | electrodes for electric discharge lamps | |
FR865241A (en) | Screw base for electric lamp | |
FR873065A (en) | Electric discharge tube | |
FR922049A (en) | High pressure electric discharge lamp | |
FR950547A (en) | Electric discharge lamp | |
FR947302A (en) | Holder for electric discharge lamps | |
FR861576A (en) | Improvements to electric discharge lamps | |
FR921948A (en) | Luminescent coating for electric discharge devices | |
FR867748A (en) | Improvements to electric discharge lamps | |
FR877617A (en) | Electrode metal for electric discharge vessels | |
FR950726A (en) | Mercury Electrode Discharge Tube | |
FR861887A (en) | electrode for electric discharge tubes |