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Publication of FR653073ApublicationCriticalpatent/FR653073A/fr
H01K1/18—Mountings or supports for the incandescent body
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01K—ELECTRIC INCANDESCENT LAMPS
H01K1/00—Details
H01K1/28—Envelopes; Vessels
FR653073D1927-10-051927-10-05Perfectionnement aux lampes électriques à incandescence destinées à illuminer des appareils optiques
ExpiredFR653073A
(fr)