FR637492A - Procédé et dispositif empêchant ou réduisant l'éblouissement causé par les phares d'automobiles et par d'autres appareils similaires
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Procédé et dispositif empêchant ou réduisant l'éblouissement causé par les phares d'automobiles et par d'autres appareils similaires
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H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01K—ELECTRIC INCANDESCENT LAMPS
H01K1/00—Details
H01K1/28—Envelopes; Vessels
H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
H01K1/325—Reflecting coating
FR637492D1926-03-291927-07-12Procédé et dispositif empêchant ou réduisant l'éblouissement causé par les phares d'automobiles et par d'autres appareils similaires
ExpiredFR637492A
(fr)