NUARC

PHOTOGRAPHIC EQUIPMENT-NAMELY, ARC LAMPS, ARC LAMP CONTROLS FOR AUTOMATICALLY MAINTAINING THE LIGHT OUTPUT OF SUCH ARC LAMPS CONSTANT, PHOTOMETERS FOR USE WITH SAID ARC LAMPS, PHOTOGRAPHIC REFLECTORS FOR SUCH ARC LAMPS, PHOTOGRAPHIC TIMERS FOR USE WITH SUCH ARC LAMPS FOR TIMING EXPOSURES TO LIGHT AND GIVING EITHER AN INDICATION AT THE END OF A PREDETERMINED TIME OR PERFORMING A CONTROL OPERATION OR BOTH, AUTOMATIC EXPOSURE CONTROL MECHANISM FOR USE WITH SUCH ARC LAMPS AND DEVELOPING ACCESSORIES FOR USE WITH SUCH ARC LAMPS FOR DEVELOPING LIGHT SENSITIVE FILM AND PAPER