FR577855A - Perfectionnements apportés aux projecteurs - Google Patents

Perfectionnements apportés aux projecteurs

Info

Publication number
FR577855A
FR577855A FR577855DA FR577855A FR 577855 A FR577855 A FR 577855A FR 577855D A FR577855D A FR 577855DA FR 577855 A FR577855 A FR 577855A
Authority
FR
France
Prior art keywords
projectors
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)
Inventor
Julius Edgar Lilienfeld
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 FR577855A publication Critical patent/FR577855A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K9/00—Lamps having two or more incandescent bodies separately heated
    • H01K9/08—Lamps having two or more incandescent bodies separately heated to provide selectively different light effects, e.g. for automobile headlamp
FR577855D 1924-02-28 1924-02-28 Perfectionnements apportés aux projecteurs Expired FR577855A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB511324A GB228366A (en) 1924-02-28 1924-02-28 Improvements relating to head lamps for vehicles

Publications (1)

Publication Number Publication Date
FR577855A true FR577855A (fr) 1924-08-12

Family

ID=9789947

Family Applications (1)

Application Number Title Priority Date Filing Date
FR577855D Expired FR577855A (fr) 1924-02-28 1924-02-28 Perfectionnements apportés aux projecteurs

Country Status (2)

Country Link
FR (1) FR577855A (fr)
GB (1) GB228366A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454765A (en) * 1944-09-28 1948-11-30 Tung Sol Lamp Works Inc Electric head lamp projector and incandescent lamp therefor

Also Published As

Publication number Publication date
GB228366A (en) 1925-02-05

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