(under subclass 435) Subject matter wherein the material enclosing means provides a circuitous passageway for the fluent material that bends, twists or curves.
(1) Note. The transfer means of this subclass provides a roundabout path for the flow of fluent material generally for the purpose of increasing exposure to radiation or to increase the surface area or volume of material irradiated. The path may, for example, be sinuous, serpentine, spiral or helical.
