B
SECTION B — PERFORMING OPERATIONS
  
SEPARATING AND MIXING
 B06
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
 B06B
METHODS AND APPARATUS FOR GENERATING AND/OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC OR ULTRASONIC FREQUENCY FOR PERFORMING MECHANICAL WORK IN GENERAL (measurement and analysis of mechanical vibrations G01H; in direction finding, locating, distance and velocity measuring G01S; control of mechanical vibrations in general G05D; generation of electrical oscillations H03B; electromechanical resonators in general H03H; electromechanical transducers H04R)