US PATENT SUBCLASS 353 / 54
.~ Liquid coolant
Current as of: June, 1999
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DEFINITION
Classification: 353/54
(under subclass 52) Subject matter including a liquid, usually water, in or near the projection path which absorbs heat energy thus reducing the amount of heat transmitted to the film or other object to be projected.
SEE OR SEARCH CLASS
359, Optics: Systems (Including Communication) and Elements,
358, for liquid in an optical element or system which affects infrared radiation.
