US PATENT SUBCLASS 353 / 4
ASCENDING HEATED AIR CHANGES PICTURES

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

4ASCENDING HEATED AIR CHANGES PICTURES

DEFINITION

Classification: 353/4

(under the class definition) Subject matter wherein an object to be projected is moved to and from the projection position by convection currents of air which usually move a fan which in turn moves the object.