75646996
Feb 22, 1999
Apr 2, 2002
GLASS FOR THE MANUFACTURING OF PHOTOMASKS TO BE USED IN THE FABRICATION OF PRINTED CIRCUIT BOARDS AND DISPLAYS; GLASS COMPONENT FOR EQUIPMENTS TO BE USED IN PHOTOLITHOGRAPHY AND REPROGRAPHY APPLICATIONS; GLASS FOR THE SHIELDING OF OPTICAL DETECTORS AND OPTICAL EMITTERS WORKING IN THE RANGES OF ULTRA-VIOLET, VISIBLE AND INFRA-RED LIGHT
Electrical and Scientific Apparatus