FR890731A - Incandescent electric lamp filled with one or more rare gases - Google Patents

Incandescent electric lamp filled with one or more rare gases

Info

Publication number
FR890731A
FR890731A FR890731DA FR890731A FR 890731 A FR890731 A FR 890731A FR 890731D A FR890731D A FR 890731DA FR 890731 A FR890731 A FR 890731A
Authority
FR
France
Prior art keywords
electric lamp
rare gases
incandescent electric
lamp filled
filled
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR890731A publication Critical patent/FR890731A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/22—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/38—Exhausting, degassing, filling, or cleaning vessels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/50—Selection of substances for gas fillings; Specified pressure thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Discharge Lamp (AREA)
FR890731D 1942-02-03 1943-02-03 Incandescent electric lamp filled with one or more rare gases Expired FR890731A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL242044X 1942-02-03

Publications (1)

Publication Number Publication Date
FR890731A true FR890731A (en) 1944-02-16

Family

ID=19780618

Family Applications (1)

Application Number Title Priority Date Filing Date
FR890731D Expired FR890731A (en) 1942-02-03 1943-02-03 Incandescent electric lamp filled with one or more rare gases

Country Status (6)

Country Link
BE (1) BE449302A (en)
CH (1) CH242044A (en)
DE (1) DE845674C (en)
FR (1) FR890731A (en)
GB (1) GB611687A (en)
NL (1) NL62424C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL214962A (en) * 1956-02-28
NL250303A (en) * 1959-04-10

Also Published As

Publication number Publication date
BE449302A (en)
GB611687A (en) 1948-11-02
NL62424C (en)
CH242044A (en) 1946-04-15
DE845674C (en) 1952-08-04

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