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Holland Electro N V
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Holland Electro N V
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Application grantedgrantedCritical
Publication of FR848460ApublicationCriticalpatent/FR848460A/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
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Engineering & Computer Science
(AREA)
General Engineering & Computer Science
(AREA)
FR848460D1939-01-041939-01-04Perfectionnements relatifs aux lanternes d'éclairage
ExpiredFR848460A
(fr)