FR950546A - Further development of cathodes for electric discharge lamps - Google Patents

Further development of cathodes for electric discharge lamps

Info

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
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Application granted granted Critical
Publication of FR950546A publication Critical patent/FR950546A/en
Expired legal-status Critical Current

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
FR950546D 1940-11-23 1947-07-31 Further development of cathodes for electric discharge lamps Expired FR950546A (en)

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
NL76841C (en)
US2258158A (en) 1941-10-07
BE481787A (en)
GB647954A (en) 1950-12-28

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