(under subclass 267) Subject matter wherein the resistance element is wound or coiled on a core, the surface of the core engaging the helix or winding over substantially the entire periphery of the core and over the entire axial length of the helix or winding as, for example, to reinforce or shape the helix or winding over its length.
(1) Note. The manner of assembly of the element on the core is immaterial for classification in this subclass.
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264+, for a resistor whose element is coiled on a core, and with a casing or housing formed as a coating.
301, for resistors generally whose element is coiled on a flat or ribbon base.
302+, for resistors generally whose elements are coiled on a cylindrical or prismatic core.