FR668882A - Perfectionnements apportés aux câbles électriques convenant plus spécialement auchauffage de terreaux et de serres pour la culture des plantes
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Perfectionnements apportés aux câbles électriques convenant plus spécialement auchauffage de terreaux et de serres pour la culture des plantes
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Felten and Guilleaume Carlswerk AG
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Felten and Guilleaume Carlswerk AG
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Application filed by Felten and Guilleaume Carlswerk AGfiledCriticalFelten and Guilleaume Carlswerk AG
Application grantedgrantedCritical
Publication of FR668882ApublicationCriticalpatent/FR668882A/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
H05B3/40—Heating elements having the shape of rods or tubes
H05B3/54—Heating elements having the shape of rods or tubes flexible
H05B3/56—Heating cables
FR668882D1928-02-021929-02-01Perfectionnements apportés aux câbles électriques convenant plus spécialement auchauffage de terreaux et de serres pour la culture des plantes
ExpiredFR668882A
(fr)