US PATENT SUBCLASS 40 / 366
.~ Portable slide viewer

Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

361  DF  PHOTOGRAPHIC TRANSPARENCY VIEWER, E.G., X-RAY VIEWER {2}
366.~ Portable slide viewer {1}
367  DF  .~.~> With internal light source

DEFINITION

Classification: 40/366

Portable slide viewer:

(under subclass 361) Device other than X-ray viewers designed to display an individual film fragment mounted in a relatively rigid frame.