.~ Attachment for illuminating or viewing (e.g., prism, etc.)
DEFINITION
Classification: 400/716
Attachment for illuminating or viewing (e.g., prism, etc.):
(under subclass 679) Subject matter wherein significance is attributed to a device that casts light on, or reflects or refracts light from, the record-medium* or a portion of the typewriter.
(1) Note. The purpose of the device is to enable the typist to see those portions of the typewriter, or of the text being typed, that may normally be out of sight. A prism (i.e., an optically transparent body having planar surfaces angularly related to one another) may be part of the viewing system.
