US PATENT SUBCLASS 353 / 60
.~.~ Air directed against face or back of object

Current as of: June, 1999
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353 /   HD   OPTICS: IMAGE PROJECTORS

52  DF  TEMPERATURE CONTROL {5}
57  DF  .~ Blower {4}
60.~.~ Air directed against face or back of object

DEFINITION

Classification: 353/60

(under subclass 57) Subject matter wherein the air is particularly forced against and moves substantially perpendicular to the front or back side of an object to be projected to hold the object in place during projection or to merely cool the object.

SEE OR SEARCH CLASS

352, Optics: Motion Pictures,

146, for similar structure in a motion- picture projector.