FR732719A - Improvements to light bulbs for incandescent electric lamps - Google Patents

Improvements to light bulbs for incandescent electric lamps

Info

Publication number
FR732719A
FR732719A FR732719DA FR732719A FR 732719 A FR732719 A FR 732719A FR 732719D A FR732719D A FR 732719DA FR 732719 A FR732719 A FR 732719A
Authority
FR
France
Prior art keywords
light bulbs
electric lamps
incandescent electric
incandescent
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)
Inventor
Ludovicus-Francisgus De Backer
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 filed Critical
Application granted granted Critical
Publication of FR732719A publication Critical patent/FR732719A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
FR732719D 1931-11-20 1932-03-03 Improvements to light bulbs for incandescent electric lamps Expired FR732719A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL732719X 1931-11-20
GB6839/32A GB387152A (en) 1931-11-20 1932-03-07 Improvements in or relating to glass bulbs for incandescent electric lamps

Publications (1)

Publication Number Publication Date
FR732719A true FR732719A (en) 1932-09-24

Family

ID=9821688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR732719D Expired FR732719A (en) 1931-11-20 1932-03-03 Improvements to light bulbs for incandescent electric lamps

Country Status (2)

Country Link
FR (1) FR732719A (en)
GB (1) GB387152A (en)

Also Published As

Publication number Publication date
GB387152A (en) 1933-02-02

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