The electrodes or other driving and sensing elements have at least two parameters which are adjusted to selectively enhance oscillations in one...http://www.google.fr/patents/US5285127?utm_source=gb-gplus-shareBrevet US5285127 - Single mode resonator and method Recherche avanc???e dans les brevets Num???ro de publicationUS5285127 AType de publicationOctroi Num???ro de demandeUS 07/787,486 Date de