IPC Subgroup
G01S 11/14 using ultrasonic, sonic or infrasonic waves
Introduced: January 1990
Last revised: January 2006
Full Title
Systems for determining distance or velocity not using reflection or reradiation > using ultrasonic, sonic or infrasonic waves
Classification Context
- Section:
- PHYSICS
- Class:
- MEASURING; TESTING
- Subclass:
- RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES