(under subclass 1) Subject matter in which one of the devices is a cathode-ray generating device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
364+, for cathode ray devices, per se.
SEE OR SEARCH CLASS
315, Electric Lamp and Discharge Devices: Systems,
3+, for devices which include the structural combination of a plurality of cathode-ray tubes and which have a circuit element (e.g., switch, inductance, condensers, resistances, etc..) structurally combined therewith. See especially subclasses 5.14+ for cathode-ray tube circuits wherein a plurality of rays pass through or in a hollow distributed parameter device, such as a wave guide, cavity resonator, or coaxial line; and subclasses 5.16+, 5.27, 5.28, and 5.39+ for cathode-ray tube system including a plurality of hollow distributed parameter devices having a cathode ray passing through or in. See subclass 9 for systems for supplying electric current and/or potential to a plurality of cathode-ray tubes.
378, X-Ray or Gamma Ray Systems or Devices, 92, for the structural combination of a plurality of X-ray tubes and a circuit element which is combined therewith.
