(under the class definition) Subject matter wherein the projector is particularly adapted to project an image of an opaque stencil or opaque plate which is perforated so as to form a particular message or design on a viewing screen or on a cloud in the sky.
(1) Note. The projectors in this subclass direct light on the far side or side of the opaque object opposite the viewing screen or cloud as in transparency projector. In the opaque projectors in subclasses 63+ and 65+ below light is projected onto and reflected from the near side or side of the object nearer the viewing screen.
