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BROYEURS JOANNES GRAS SOC D
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BROYEURS JOANNES GRAS SOC D
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Application filed by BROYEURS JOANNES GRAS SOC DfiledCriticalBROYEURS JOANNES GRAS SOC D
Application grantedgrantedCritical
Publication of FR751247ApublicationCriticalpatent/FR751247A/fr
H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
H05B3/00—Ohmic-resistance heating
H05B3/0033—Heating devices using lamps
FR751247D1933-02-231933-02-23Chauffage électrique par lampes à incandescence avec enveloppe de répartition de chaleur à différentes épaisseurs
ExpiredFR751247A
(fr)