US PATENT SUBCLASS 352 / 211
.~.~ Ventilating

Current as of: June, 1999
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352 /   HD   OPTICS: MOTION PICTURES

204  DF  SHUTTERS {3}
208  DF  .~ Rotary {7}
211.~.~ Ventilating

DEFINITION

Classification: 352/211

(under subclass 208) Subject matter in which the light interrupting means includes means causing a flow of air.

SEE OR SEARCH THIS CLASS, SUBCLASS:

202, for projection light sources with ventilation and cooling.

212+, for ventilation in motion picture apparatus for film cooling.

SEE OR SEARCH CLASS

362, Illumination,

294, for cooling and ventilating systems in projectors generally.