| 摘要 |
769,744. Colour television tubes. CHROMATIC TELEVISION LABORATORIES, Inc. April 18, 1955 [April 19, 1954], No. 11104/55. Drawings to Specification. Class 39(1). The damping wires of colour-selection grids for colour television tubes each comprise a metal core e.g. tungsten, molybdenum or aluminium covered with insulating material e.g. aluminium oxide or vitreous enamel, the wires being bent into a zig-zag or undulating shape. Specification 758,770 is referred to. |
