FR692232A - Lampe à incandescence négative - Google Patents

Lampe à incandescence négative

Info

Publication number
FR692232A
FR692232A FR692232DA FR692232A FR 692232 A FR692232 A FR 692232A FR 692232D A FR692232D A FR 692232DA FR 692232 A FR692232 A FR 692232A
Authority
FR
France
Prior art keywords
negative
incandescent lamp
incandescent
lamp
negative incandescent
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
English (en)
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.)
Westinghouse Lamp Co
Original Assignee
Westinghouse Lamp Co
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 Westinghouse Lamp Co filed Critical Westinghouse Lamp Co
Application granted granted Critical
Publication of FR692232A publication Critical patent/FR692232A/fr
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
    • H01J61/64—Cathode glow lamps
FR692232D 1929-03-20 1930-03-18 Lampe à incandescence négative Expired FR692232A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US348409A US2003493A (en) 1929-03-20 1929-03-20 Negative glowlamp

Publications (1)

Publication Number Publication Date
FR692232A true FR692232A (fr) 1930-10-31

Family

ID=23367915

Family Applications (1)

Application Number Title Priority Date Filing Date
FR692232D Expired FR692232A (fr) 1929-03-20 1930-03-18 Lampe à incandescence négative

Country Status (2)

Country Link
US (1) US2003493A (fr)
FR (1) FR692232A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623191A (en) * 1947-03-20 1952-12-23 Int Standard Electric Corp Electric discharge tube
US2715696A (en) * 1951-08-28 1955-08-16 Northrop Aircraft Inc Gas-filled discharge lamp
GB2145557B (en) * 1983-08-13 1987-05-07 Emi Plc Thorn Improvements in discharge lamps
US5027030A (en) * 1989-11-30 1991-06-25 Gte Products Corporation Glow discharge lamp having zero anode voltage drop
US5606218A (en) * 1995-03-24 1997-02-25 Osram Sylvania Inc. Cold cathode subminiature fluorescent lamp

Also Published As

Publication number Publication date
US2003493A (en) 1935-06-04

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