(under subclass 326) Subject matter including means for causing a light ray striking a surface to return back into the medium from which it came.
(1) Note. A prism which only reflects is placed in the coordinated subclasses below. If the prism both reflects and refracts, it is proper for this or the indented subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
341, for reflectors, per se.
SEE OR SEARCH CLASS
343, Communications: Radio Wave Antennas, 755, for antennas with spaced or external radio wave refractor and reflector.
