Audio signal processing apparatus, namely, noise cancelling audio speakers; Noise suppression and cancellation apparatus, namely, speaker drivers, head phones and ear pieces with ambient noise cancellation; Noise cancelling headphones; and, personal headphones for use with sound transmitting systems

protective coatings, namely asphalt emulsion waterproofing and dampproofing compounds and mastics

CLEAR PROTECTIVE COATING FOR EASIER GRAFFITI REMOVAL FROM MOST COMMON BUILDING MATERIAL

SOUND ABSORBING PANEL SYSTEM CONSISTING OF MODULAR ACOUSTICAL PANELS FOR ASSEMBLY INTO SOUND BARRIERS, PARTIAL ENCLOSURES OR COMPLETE ENCLOSURES

Ultrasonic therapy machines and apparatus

Ultrasonic therapy machines and apparatus