H03H 9/19 consisting of quartz
Introduced: January 1980
Full Title
Full titles differ between systems:
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators > Constructional features of resonators consisting of piezoelectric or electrostrictive material > having a single resonator > consisting of quartz
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators (electro-acoustic transducers such as loudspeakers, microphones or gramophone pick-ups H04R; piezoelectric, electrostrictive or magnetostrictive devices with mechanical input or output, e.g. actuators or sensors, H10N30/00, H10N35/00) > Constructional features of resonators consisting of piezoelectric or electrostrictive material (H03H9/25 takes precedence) > having a single resonator (crystal tuning forks H03H9/21) > consisting of quartz
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