(under subclass 238) Devices which have an envelope and an electrode, at least part of the envelope formed of
electrically conductive material, either the electrode being supported by the conductive portion of the envelope wall or having the electrode supported by supporting means which is supported by the conductive portion of the envelope wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
239+, where the device is enclosed within an envelope which has an electrically conducting envelope wall portion, the wall portion being disclosed or claimed as being a shield.
246+, where the devices is a discharge device and the conductive envelope wall portion is disclosed or claimed as being an electrode of the device, the supporting and/or spacing structure for a plurality of electrodes which are supported by the conductive wall portion being claimed.
248, where the devices is a discharge device having a conductive envelope wall portion which is not disclosed or claimed as being either a shield or an electrode and the supporting and/or spacing structure for a plurality of electrodes which are supported by the conductive wall portion is claimed.
281, where the device has a conductive envelope portion which is provided with an aperture an electrode being mounted in or around the aperture. SEE OR SEARCH CLASS
220, Receptacles,
2.3, for envelopes, per se, which have conductive wall portions.
