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MULLARD
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MULLARD
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Application filed by MULLARDfiledCriticalMULLARD
Application grantedgrantedCritical
Publication of FR576783ApublicationCriticalpatent/FR576783A/fr
F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
F21V11/18—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides
Landscapes
Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
FR576783D1924-02-051924-02-05Perfectionnements aux appareils d'éclairage électriques dits
ExpiredFR576783A
(fr)