A method for forming an identifying indicia on a cathode ray tube being manufactured, which method is practiced by applying a paint containing a powdered metal to a particular exterior surface portion of a glass envelope, forming a part of the cathode ray tube, to form a solid paint layer, followed by...http://www.google.co.uk/patents/US4791267?utm_source=gb-gplus-sharePatent US4791267 - Method of forming identifying indicium on cathode ray tubes
