(under subclass 24) Structures having at least one conductor surrounded by and spaced from the inner walls of a tube or conduit which tube or conduit may be of either conducting or nonconducting material.
(1) Note. For similar structures having plural parallel or twisted conductors (not arranged in surrounding relation), see this class, subclass 27.
(2) Note. For similar structures having solid insulation filling the space, see this class, subclasses 96, 98, 102, and indented subclasses and 111.
(3) Note. For conduits having interior conductor supporting means, see this class, subclasses 99 and 100.
