Patent classifications
H
ELECTRICITY
Load children
H05
ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Load children
H05B
ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
Load children
H05B3/40
Heating elements having the shape of rods or tubes
Load children Filter patents View analytics View as hierarchy
H05B3/48
heating conductor embedded in insulating material
Load children Filter patents View analytics View as hierarchy
H05B3/50
heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
Filter patents View analytics View as hierarchy