220713 ⎘
Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators; Details; Driving means, e.g. electrodes, coils for networks using surface acoustic waves; Transducers of particular shape or position Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
Sub-classes:SURFACE ACOUSTIC WAVE FILTER INCLUDING RESONATOR WITH MULTI-STAGED REFLECTOR
#2Acoustic wave filter device
#3Band elimination filter and composite filter
#4Elastic wave device and filter device
#5Communication device
#6Elastic wave filter and communication device
#7Acoustic wave filter device and duplexer
#8Surface acoustic wave resonator, surface acoustic wave device, and communications equipment