NATIONAL

CARBON ARC IRRADIATING APPARATUS FOR THE IRRADIATION OF FOODSTUFFS AND OTHER SUBSTANCES ENTERING INTO CHEMICAL REACTIONS ACCELERATED BY LIGHT, AND [ ARC LAMPS AND CARBONS USED IN SUCH APPARATUS; ] AND CARBONS FOR USE IN MOTION PICTURE PROJECTOR, MICROPROJECTOR, STEREOPTICON, PHOTOGRAPHIC, PHOTOENGRAVING, AND BLUE PRINT APPARATUS