FR839169A - Incandescent electric lamp - Google Patents

Incandescent electric lamp

Info

Publication number
FR839169A
FR839169A FR839169DA FR839169A FR 839169 A FR839169 A FR 839169A FR 839169D A FR839169D A FR 839169DA FR 839169 A FR839169 A FR 839169A
Authority
FR
France
Prior art keywords
electric lamp
incandescent electric
incandescent
lamp
electric
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 FR839169A publication Critical patent/FR839169A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/52—Means for obtaining or maintaining the desired pressure within the vessel
    • H01K1/54—Means for absorbing or absorbing gas, or for preventing or removing efflorescence, e.g. by gettering
FR839169D 1937-06-12 1938-06-10 Incandescent electric lamp Expired FR839169A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL205004X 1937-06-12

Publications (1)

Publication Number Publication Date
FR839169A true FR839169A (en) 1939-03-28

Family

ID=19778508

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839169D Expired FR839169A (en) 1937-06-12 1938-06-10 Incandescent electric lamp

Country Status (7)

Country Link
US (1) US2211597A (en)
BE (1) BE428541A (en)
CH (1) CH205004A (en)
DE (1) DE707824C (en)
FR (1) FR839169A (en)
GB (1) GB512083A (en)
NL (1) NL52995C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435272A (en) * 1966-07-15 1969-03-25 Gen Electric Tubular halogen cycle incandescent lamp with inner cylinder for universal operation

Also Published As

Publication number Publication date
BE428541A (en)
DE707824C (en) 1941-07-04
NL52995C (en)
CH205004A (en) 1939-05-31
US2211597A (en) 1940-08-13
GB512083A (en) 1939-08-29

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