73753519
Sep 14, 1988
Jul 18, 1989
CAMERAS, PHOTOGRAPHIC AND PRINTING LAMPS, LAMP CONTROLS FOR AUTOMATICALLY MAINTAINING THE LIGHT OUTPUT OF SUCH LAMPS CONSTANT, PHOTOMETERS FOR USE WITH SAID LAMPS, PHOTOGRAPHIC TIMERS FOR USE WITH SUCH 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 CONTROLS FOR USE WITH SUCH LAMPS, LIGHT BOXES, VIEWING TABLES, PHOTOGRAPHIC DEVELOPING SINKS, PLATEMAKERS, PROOFING EXPOSURE UNITS, VACUUM FRAMES, PRECISION LINEUP TABLES, PHOTOGRAPHIC SAFE LIGHTS, FILM STORAGE CABINETS, DIFFUSION TRANSFER PROCESSORS, QUARTZ LIGHTED CONTACT AND DUPLICATING UNITS, AND PARTS THEREFOR
Electrical and Scientific Apparatus