(under subclass 352) Electrodes and shields where, (1) the electrode is provided with a coating, or (2) the electrode or shield is formed of a plurality of laminations.
SEE OR SEARCH THIS CLASS, SUBCLASS:
329, where the electrode is a mosaic electrode.
336, where the electrode is electron emissive electrode and is provided with a coating, the electrode being designed to emit electrons only from a small point-like area.
337+, where the electrode is an indirectly heated cathode.
345, where the electrode is a filament or resistance heated electrode which is provided with a coating. 346, where the electrode is provided with an electron emissive coating.
SEE OR SEARCH CLASS
428, Stock Material or Miscellaneous Articles,
98+, for a stock material product in the form of a single or plural layer which has structure (e.g., dimension or aperture), subclasses 221+ for such a product embodying an element or component which is structurally defined (e.g., porous or size of fiber), subclasses 357+ for a structurally defined or coated rod, strand, fiber, filament or other element, and subclasses 411.1+ and 615+ for nonmetallic and metallic composites, respectively, defined in terms of the composition of their components.