Skip to content
PCE
Search Classifications
Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H03H 9/19

consisting of quartz

Introduced: January 1980

Full Title

Full titles differ between systems:

IPC:

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

CPC:

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

No child classifications to compare. This is a leaf node in both IPC and CPC.