(under the class definition) Systems wherein the system is provided with means, or where there is shielding means for part of the system, to prevent radiation of electromagnetic waves from and/or to the system or some part thereof.
(1) Note. For electrical systems provided with anti-inductive means, search the appropriate system class. See search class notes, below.
SEE OR SEARCH CLASS
123, Internal-Combustion Engines,
146.5, and indented subclasses, for internal combustion engines with shielded ignition system.
174, Electricity: Conductors and Insulators, 32, and indented subclasses for anti-inductive conductors and conductor arrangements, subclass 50 and indented subclasses for electrical boxes, receptacles and containers, subclass 78 for terminal end structure of conduits, cables and conductors provided with means to connect a ground wire thereto.
178, Telegraphy,
49, and 69.
307, Electrical Transmission or Interconnection Systems,
89+,.
313, Electric Lamp and Discharge Devices,
239+, for electric lamps and electric space discharge devices which are provided with shielding means to shield the electrodes or some part of the device and significant supporting and/or spacing structure for the shielding means is claimed. Subclass 313 (of Class 313) provides for other electric lamps and electric space discharge devices which are provided with shielding means. (See (1) Note, above.)
333, Wave Transmission Lines and Networks, particularly
12, for transmission line inductive or radiation interference reduction systems, and subclasses 243+ for transmission lines of the shielded type.
340, Communications: Electrical,
288+, 310.01+ and 500+ for electric signaling systems combined with other electric signaling or nonsignaling systems.
343, Communications: Radio Wave Antennas, 841+, for antennas with an electrical shield; subclass 851 for antennas with a coupling network having a radiation suppressor; and subclass 905 for antennas combined with a shielded transmission line.
379, Telephonic Communications,
392, 394, 398, 402+, 406+, and 415.
455, Telecommunications,
300+, for shielding in a radio receiver. (See (1) Note, above.)
