Multiple beam flat color television tube and sweep system therefor

Claim 1

IN A MULTIPLE GUN CATHODE RAY TUBE, THE COMBINATION OF: AN ENVELOPE HAVING A TRANSLUCENT VIEWING FACE AND A SPACED RELATIVELY PARALLEL FACE WITH OPPOSING ENDS AND OPPOSING SIDES ENCLOSING AN EVACUATED SPACE; A TRANSLUENT DISPLAY SHEET POSITIONED WITHIN SAID ENVELOPE BETWEEN SAID ENVELOPE FACES AND HAVING A PLURALITY OF PARALLEL RIDGES ON EACH FACE THEREOF; A FIRST SET OF DEFLECTION PLATES POSITIONED AT ONE END OF SAID ENVELOPE; FIRST MEANS FOR DIRECTING ELECTRON BEAMS PAST SAID FIRST SET IN A FIRST DIRECTION ALONG A FIRST PATH SUBSTANTIALLY PERPENDICULAR TO SAID RIDGES AND SPACED FROM ONE FACE OF SAID SHEET; A SECOND SET OF DEFLECTION PLATES POSITIONED AT SAID ONE END OF SAID ENVELOPE; SECOND MEANS FOR DIRECTING ELECTRON BEAMS PAST SAID SECOND SET IN THE OPPOSITE DIRECTION ALONG A SECOND PATH SUBSTANTIALLY PERPENDICULAR TO SAID RIDGES AND SPACED FROM THE OPPOSITE FACE OF SAID SHEET; A THIRD SET OF DEFLECTION PLATES POSITIONED AT THE OPPOSITE END OF SAID ENVELOPE; THIRD MEANS FOR DIRECTING ELECTRON BEAMS PAST SAID THIRD SET IN THE OPPOSITE DIRECITON ALONG SAID FIRST PATH;