(under the class definition) Subject matter wherein the oscillator has coupled or connected to its output circuit an additional network, which network may be passive or active, the driven load being coupled or connected to the output of the additional network.
(1) Note. To be classified in this and indented subclasses the additional output coupling network must be significantly claimed. If it is claimed nominally, for example, as a transformer coupled output or a directly connected output, or the like, classification will be with the particular oscillator and not herein.
(2) Note. Where the oscillator is claimed in broad terms, such as a wave generator, pulse generator harmonic generator, oscillator, or the like, so as to provide no basis for classification in this class and the oscillator is claimed in combination with a specific output coupling network, classification, in general, will be with the particular coupling network and not herein.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37+, for beat frequency oscillators wherein at least two sources of oscillation are connected or coupled to a modulator or mixer network to produce an output which is the difference or the sum of the two frequencies.
45, for oscillators including a network for producing a polyphase output.
46+, for plural oscillators wherein one oscillator may be in the output circuit of another oscillator. 72, for electron coupled oscillators wherein a single multi-grid electron tube (e.g., tetrode or pentode) is so connected that one section of the tube acts as an oscillator and the output electrode (usually the anode) is coupled to the oscillator solely through the electron stream and acts effectively as a stage of amplification.
SEE OR SEARCH CLASS
327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems, appropriate subclasses and search notes for a field of search for coupling networks of the active element type; also see appropriate subclasses for miscellaneous systems with particular output circuits. See the (2) Note above.
333, Wave Transmission Lines and Networks, provides for passive type wave transmission coupling networks (e.g., impedance matching networks, equalizing networks, delay lines, wave filters); see the class definitions and search notes; also see
24+, for passive coupling networks, per se, and see the Search Class notes thereunder.. See also (2) Note above.
