QUIET BUBBLE

Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking, life-saving and teaching apparatus and instruments, namely, active noise reduction headrest systems composed of loudspeakers, microphones, power amplifiers and control electronics; apparatus for recording, transmission or reproduction of sound or images

Evaluations and assessments in the fields of science and technology provided by engineers for active noise control, active noise reduction, active noise cancellation, and active vibration control; scientific and technical research in the field of active noise control, active noise reduction, active noise cancellation, and active vibration control; research and development of new products for others; technical research in the field of active noise control, active noise reduction, active noise cancellation, and active vibration control studies