(under subclass 437) Subject matter wherein the complex winding surface of a single core either (a) is disposed about an elongated arcuate line, or (b) includes two winding surface portions disposed about angularly related or parallel axes.
(1) Note. Winding a "single article" is intended to include L-shaped, C-shaped, U-shaped, and similarly shaped articles that may include spaced winding surfaces with offset or parallel axes of a unified article, but exclude pin boards and similar devices where identical parallel pins, rows, or columns are simply repetitively wound even though the pins may be on a common support.
