(under subclass 29) Method including attaching or manipulating a perforated panel or equivalent arrangement located adjacent the screen of a cathode ray tube to delineate the path of various electron or light beams within the tube as in a color television picture tube.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37, for methods of assembly including CRT mask making.
47, for other methods of making a CRT mask.
68, for apparatus having means for CRT mask manipulation.
SEE OR SEARCH CLASS
313, Electric Lamp and Discharge Devices, 402+, for CRT shadow mask, support or shield, for the devices, per se.
430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof,
23+, for processes under the class definition for making a CRT or components thereof.
