FR648455A - Improvements to projectors including incandescent electric lamps - Google Patents

Improvements to projectors including incandescent electric lamps

Info

Publication number
FR648455A
FR648455A FR648455DA FR648455A FR 648455 A FR648455 A FR 648455A FR 648455D A FR648455D A FR 648455DA FR 648455 A FR648455 A FR 648455A
Authority
FR
France
Prior art keywords
electric lamps
incandescent electric
including incandescent
projectors including
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
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.)
MACHAL PROJECTEURS
Original Assignee
MACHAL PROJECTEURS
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 MACHAL PROJECTEURS filed Critical MACHAL PROJECTEURS
Application granted granted Critical
Publication of FR648455A publication Critical patent/FR648455A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K7/00—Lamps for purposes other than general lighting
    • H01K7/02—Lamps for purposes other than general lighting for producing a narrow beam of light; for approximating a point-like source of light, e.g. for searchlight, for cinematographic projector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape
FR648455D 1927-02-07 1928-02-06 Improvements to projectors including incandescent electric lamps Expired FR648455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE648455X 1927-02-07

Publications (1)

Publication Number Publication Date
FR648455A true FR648455A (en) 1928-12-10

Family

ID=3876655

Family Applications (1)

Application Number Title Priority Date Filing Date
FR648455D Expired FR648455A (en) 1927-02-07 1928-02-06 Improvements to projectors including incandescent electric lamps

Country Status (2)

Country Link
BE (1) BE345643A (en)
FR (1) FR648455A (en)

Cited By (2)

* 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
US2465106A (en) * 1943-10-18 1949-03-22 Gen Electric Vehicle head lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465106A (en) * 1943-10-18 1949-03-22 Gen Electric Vehicle head lamp
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
BE345643A (en)

Similar Documents

Publication Publication Date Title
FR630354A (en) Improvements to incandescent electric lamps
FR648455A (en) Improvements to projectors including incandescent electric lamps
FR677066A (en) Improvements to incandescent electric lamps
FR623708A (en) Incandescent electric lamps
FR648062A (en) Incandescent electric lamp
FR677622A (en) Improvements to projectors including incandescent electric lamps
FR626027A (en) Improvements to incandescent electric lamps
FR624050A (en) Improvements to incandescent electric lamps
FR621135A (en) Improvements to incandescent electric lamps
FR702874A (en) Incandescent lamp improvements
FR666477A (en) Improvements to incandescent lamps and their mounts
FR616189A (en) Improvements to incandescent electric lamps
FR665272A (en) Improvements to incandescent electric lamps and their supports
FR628329A (en) Improvements to incandescent electric lamps
FR631452A (en) Improvements to incandescent electric lamps
FR705272A (en) Improvements to incandescent electric lamps or discharge tubes
FR663300A (en) Improvements to incandescent electric lamps
FR688252A (en) Incandescent lamp improvements
FR609545A (en) Incandescent lamp improvements
FR634102A (en) Incandescent lamp improvements
FR635383A (en) Improvements to incandescent electric lamps
FR703655A (en) Improvements to incandescent electric lamps
FR635382A (en) Improvements to incandescent electric lamps
FR658852A (en) Incandescent electric lamps
FR747957A (en) Improvements to incandescent electric lamps