(under the class definition) Subject matter wherein the plurality of electric lamps or discharge devices or an electric lamp and a discharge device are structurally combined in a single device to form a single unitary device.
(1) Note. This or the indented subclasses do not include the following subject matter even though such subject matter is within the subclass definition: (a) An incandescent lamp having a plurality of filaments or glowers all within the same envelope is not included in this or the indented subclasses but will be found in subclass 316 below, or in one of the subclasses specified in the search notes of that subclass; (b) Structural combinations of an incandescent lamp and a discharge device where the filament of the lamp is connected in shunt with the discharge electrodes of the discharge device. See Class 315, Electric Lamp and Discharge Devices: Systems, subclasses 46+ for this subject matter; (c) Structural combinations of an incandescent lamp and a discharge device where the lamp filament is connected in series with the discharge electrodes of the discharge device. See Class 315, Electric Lamp and Discharge Devices: Systems, subclass 49 for this subject matter; (d) Structural combinations consisting of a firing gap of a spark plug, and an intensifier gap connected in series therewith, see subclasses 123+ for this subject matter.
(2) Note. In many of the devices in this and the indented subclasses the plurality of devices are enclosed within the same envelope.
(3) Note. Where the subject matter includes a plurality of discharge devices which are structurally combined, to be classified in this or the indented subclasses there must not be a common electrode for the plurality of discharge devices. For example, discharge devices having a single cathode and a plurality of anodes which cooperate with the single cathode are excluded from this and the indented subclasses even though the disclosure states that the device may be used in place of a plurality of discharge device. Included in this and the indented subclasses are structural combinations of plural discharge devices and lamps or a discharge device and
a lamp where there is an interelectrode connection between the electrodes of the different devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
306, and the subclasses specified in the notes thereto for discharge devices which are provided with a plurality of anodes and/or cathodes. Included in subclasses 306+ are space discharge devices having a plurality of similar gaps connected in series, such as for example, a row of spaced sphere electrodes in which a discharge takes place along the length of the row. SEE OR SEARCH CLASS
314, Electric Lamp and Discharge Devices: Consumable Electrodes,
7+, for the combination of a consumable electrode discharge device (e.g., an arc lamp or similar device having means for feeding the electrodes together as they are consumed) and another type of discharge device or electric lamp.
315, Electric Lamp and Discharge Devices: Systems,
3+, 32, 35+, and 64+ for the structural combination of a plurality of discharge devices, or lamps, or a discharge device and a lamp where the structural combination includes a circuit element (e.g., switch, impedance, etc..), see subclasses 3+ where one of the devices is a cathode-ray tube, subclass 32 where the combination includes a lamp and a discharge device, subclasses 35+ where the combination includes a plurality of discharge devices, and subclasses 64+ where the combination includes a plurality of lamp filaments (multifilament lamps). In the devices in Class 315, the circuit element may be connected between electrodes of different ones of the combined devices, or to an electrode of one of the devices, or not connected to any of the combined devices but be merely mounted in the envelope, base or other part of the unitary device. For the structural combinations of incandescent lamps and discharge devices connected in circuit relation, which are classified in Class 315, see (1) Note, parts b and c, above.
378, X-Ray or Gamma Ray Systems or Devices,
9, 92 and 193+ for plural source systems or devices.
