FR763213A - Improvements to incandescent electric lamps - Google Patents

Improvements to incandescent electric lamps

Info

Publication number
FR763213A
FR763213A FR763213DA FR763213A FR 763213 A FR763213 A FR 763213A FR 763213D A FR763213D A FR 763213DA FR 763213 A FR763213 A FR 763213A
Authority
FR
France
Prior art keywords
electric lamps
incandescent electric
incandescent
lamps
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.)
BERTRAM B FENN Ltd
Original Assignee
BERTRAM B FENN Ltd
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 BERTRAM B FENN Ltd filed Critical BERTRAM B FENN Ltd
Application granted granted Critical
Publication of FR763213A publication Critical patent/FR763213A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
FR763213D 1933-09-15 1933-10-30 Improvements to incandescent electric lamps Expired FR763213A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB25633/33A GB425485A (en) 1933-09-15 1933-09-15 Improvements in or relating to incandescent electric lamps
FR763213T 1933-10-30
BE399427T 1933-10-31

Publications (1)

Publication Number Publication Date
FR763213A true FR763213A (en) 1934-04-25

Family

ID=10230817

Family Applications (1)

Application Number Title Priority Date Filing Date
FR763213D Expired FR763213A (en) 1933-09-15 1933-10-30 Improvements to incandescent electric lamps

Country Status (3)

Country Link
BE (1) BE399427A (en)
FR (1) FR763213A (en)
GB (1) GB425485A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR222560A (en) * 1968-11-04

Also Published As

Publication number Publication date
BE399427A (en) 1933-11-30
GB425485A (en) 1935-03-15

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