(under subclass 520) Subject matter wherein the significant housing, casing or support structure is pliable or capable of being flexed or bent without permanent distortion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
456, for heater with a support adjustable to the shape of material to be heated.
535, for heating unit specially formed to fit material to be heated.
549, for heating element support of flexible material.
SEE OR SEARCH CLASS 138, Pipes and Tubular Conduits,
35, for portable pipe heaters.
338, Electrical Resistors,
210+, for flexible or folding resistors and subclass 259 for resistors, per se, combined with a round, braided or woven casing or housing.
607, Surgery: Light, Thermal, and Electrical Application,
149, for heating devices for the human body, particularly for bands and belts.
