(under subclass 250) Subject matter wherein the cable or conductor is not visible to the naked eye.
(1) Note. Usually the size of the structure is given in terms of microns and is smaller than 20 mils.
(2) Note. The micropanels of this class should not be confused with microstrip or microwave devices classified principally in Class 333, Wave Transmission Lines and Networks. (A microstrip is generally a flat conductor which coacts with a single ground plane.)
(3) Note. Coating thickness of a conducting layer is insufficient for classification in this subclass.
