The invention utilizes harmonics of certain clamped ultrasound transducers to generate ultrasound within the liquid of an ultrasonic tank and in a frequency range of between about 100 khz to 350 khz (i.e., “microsonic” frequencies). The application of microsonic frequencies to liquid preferably occurs...http://www.google.fr/patents/US6914364?utm_source=gb-gplus-shareBrevet US6914364 - Apparatus and methods for cleaning and/or processing delicate parts
Apparatus and methods for cleaning and/or processing delicate parts
