(under subclass 174) Apparatus wherein the wave energy is specified or identifiable (e.g.., by a transducer or vibrator generating waves at a corresponding characteristic frequency or wave length) as being in the sonic (usually above 10 cycles per second) or supersonic range.
SEE OR SEARCH CLASS
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
73.1+, for processes of bonding laminae with the application of sonic or ultrasonic energy to the work.
264, Plastic and Nonmetallic Article Shaping or Treating: Processes,