Audio and acoustic products for sound insulation and privacy, namely, architectural sound barriers, absorbers, and diffusers, acoustic membranes, acoustic separation unit, nonstructural, nonmetal building materials for acoustical or sound insulation purposes, namely, ceiling tiles, acoustical curtains, acoustical liners, wall partitions and wall panels; audio and acoustic products for sound insulation and privacy, namely, structural sound barriers, sound absorbers and diffusers

medical apparatus; namely, patient support device in the nature of an automatically adjusting air mattress for the prevention of pressure sores