Lead-in seal for evacuated envelope of an electron discharge device for connecting electrodes located within said envelope to a voltage source positioned outside said envelope

Claim 1

AN ENVELOPE STRUCTURE FOR A CATHODE RAY TUBE, COMPRISING: A HOLLOW FUNNEL MEMBER OF CERAMIC MATERIAL HAVING AN OPENING IN THE LARGER END THEREOF; A FACE PLATE OF GLASS MATERIAL; A SEAL LAYER OF ELECTRICAL INSULATIVE GLASS MATERIAL FUSED TO THE FUNNEL MEMBER AND JOINING SAID FACE PLATE TO THE LARGER END OF SAID FUNNEL TO CLOSE THE OPENING IN SAID FUNNEL WITH A VACUUM-TIGHT SEAL; A PLURALITY OF AREAS OF LIGHT TRANSPARENT, ELECTRICALLY CONDUCTIVE MATERIAL COATED OVER THE INNER SURFACE OF SAID FACE PLATE, EACH OF SAID AREAS BEING INSULATINGLY SPACED FROM THE OUTER AREAS AND HAVING A LEAD PORTION EXTENDING BENEATH THE SEAL LAYER THROUGH SAID SEAL TO THE EXTERIOR OF SAID ENVELOPE; AND A PLURALITY OF SPACED CONNECTOR STRIPS OF ELECTRICALLY CONDUCTIVE MATERIAL COATED ON THE OUTER SURFACE OF