(under subclass 50.5) Subject matter having a casing or jacket surrounding the envelope or a portion thereof, or having the envelope wholly or partially covered with a coating or similar covering material.
(1) Note. This subclass includes envelopes within the definition of subclass 50.5 which have an integral double wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
35, where the casing, jacket or covering is an electromagnetic or electrostatic shield.
SEE OR SEARCH CLASS
220, Receptacles, 2.1+, for the structure of double walled and coated envelopes for electric lamps and electric space discharge devices where no electrical structure is claimed.
313, Electric Lamp and Discharge Devices,
312, and the subclasses specified in the Notes thereto for electric lamps and discharge devices which are provided with a hermetically sealed envelope and a separable casing or jacket surrounding the envelope, and subclasses 317+ and the subclasses specified in the Notes thereto for electric lamp and discharge devices having integral double wall hermetically sealed envelopes or a covered or coated hermetically sealed envelope.
428, Stock Material or Miscellaneous Articles, appropriate subclasses, for a single or plural layer stock material and for miscellaneous articles, see especially
34, for a plurality of light transmissive sheets or webs spaced from each other and hermetically sealed at their edges and enclosing a gas space therebetween and subclasses 34.1+ for a container type miscellaneous article.
