(under the class definition) Subject matter comprising means to convert energy in the form of acoustic waves into energy in the form of electric signals or vice versa.
(1) Note. The proximate functions of transducers classifiable in this subclass or in the subclasses indented hereunder limit them to use in acoustic wave systems of this class type. For a complete search for similar transducers of other or general utility, see the search notes to the appropriate subclasses indented hereunder.
