DIFF Subgroup
G01C 19/68 Lock-in prevention
Introduced: January 1990
Full Title
Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects > Turn-sensitive devices without moving masses > Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams > Ring laser gyrometers > Lock-in prevention
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 1990.
Child Classifications
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