CONVERTER TUBES OR IMAGE INTENSIFIERS OF X-RAYS. TUBES FOR TELEVISION CAMERAS; IMAGE INTENSIFIERS OR CONVERTER TUBES; THE OTHER PHOTOCATHODE TUBES. ELECTRONIC LAMPS TUBES AND VALVES HOT CATHODE COLD CATHODE OR PHOTO|| HAMAMATSU|| R980/22
CONVERTER TUBES OR IMAGE INTENSIFIERS OF X-RAYS. TUBES FOR TELEVISION CAMERAS; IMAGE INTENSIFIERS OR CONVERTER TUBES; THE OTHER PHOTOCATHODE TUBES. ELECTRONIC LAMPS TUBES AND VALVES HOT CATHODE COLD CATHODE OR PHOTO|| HAMAMATSU|| R980/22