(under subclass 205) Subject matter in which the system includes the combination of a frequency or phase-modulation type receiver, which may be broadly claimed, with a specific discriminator or detector means.
(1) Note. For similar subject matter consisting of discriminator means combined with receiver means other than a
frequency or phase modulation type receiver the search will be elsewhere in this class, and for frequency or phase discriminator, per se, the search will be elsewhere
(2) Note. For purposes of classification in this subclass the words discriminator and detector are used synonymously and refer to the final means whereby amplitude variations are derived in response to the frequency or phase properties of a signal. The subject matter to be found here is not to be confused with heterodyning or mixing means which is sometimes referred to as the first detector of a receiver. Heterodyning or mixing means will be found in this class (455) subclass 313 and the indented subclasses.
SEE OR SEARCH CLASS
329, Demodulators,
315+, for frequency discriminators, and 345+ for phase discriminator. See the definition and search notes in Class 329 for the complete field of search in other related classes and for a statement of the dividing line between the subject matter in that and other related classes.
