D'Agostini's Structural 5-Languages Interactive Patent Terminology & Classification
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F
F21/F24
Lighting / Heating - Beleuchtung / Heizung - Eclairage / Chauffement - Almacenamiento / Calefaccion - Illuminazione / Riscaldamento

 F21
LIGHTING
BELEUCHTUNG
ECLAIRAGE
ALMACENAMIENTO O DISTRIBUCION DE GASES O LIQUIDOS
ILLUMINAZIONE

 F22
STEAM GENERATION
DAMPFERZEUGUNG
PRODUCTION DE VAPEUR
PRODUCCION DE VAPOR
GENERAZIONE DI VAPORE

 F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
FEUERUNGEN; VERBRENNUNGSVERFAHREN
APPAREILS A COMBUSTION; PROCEDES DE COMBUSTION
APARATOS DE COMBUSTION; PROCESOS DE COMBUSTION
APPARATI DI COMBUSTIONE; PROCESSI DI COMBUSTIONE

 F24
HEATING; RANGES; VENTILATING
HEIZUNG; HERDE; LÜFTUNG
CHAUFFAGE; FOURNEAUX; VENTILATION
CALEFACCION; HORNILLAS; VENTILACION
RISCALDAMENTO; CUCINE; VENTILAZIONE