US PATENT SUBCLASS 349 / 6
.~.~ Overhead projector

Current as of: June, 1999
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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

1  DF  LIQUID CRYSTAL SYSTEM {9}
5  DF  .~ Projector including liquid crystal cell (s) {3}
6.~.~ Overhead projector

DEFINITION

Classification: 349/6

Overhead projector:

(under subclass 5) Subject matter wherein the direction of the light passing through the liquid crystal cell (or cells) is in the vertical direction and the projection of the light is in a direction substantially perpendicular thereto.

(1) Note. Included here are projectors where the liquid crystal cell acts as an electrically driven transparency.