.~> Electrical circuit interrupted by film sensing means
DEFINITION
Classification: 352/143
(under the class definition) Subject matter including means to prevent combustion of the motion picture film or to limit the combustion to a small portion of the film strip.
SEE OR SEARCH CLASS
116, Signals and Indicators,
101+, for thermally responsive indicators generally.
169, Fire Extinguishers,
19+, and 63 for fire extinguishers suitable for motion picture devices. 340, Communications: Electrical,
584, and 577, for electrical indicating systems responsive to temperature or flames; and subclass 628 for such systems responsive to gas or smoke.
