Air curtains, namely, air blowers for room openings; air blades; air doors in the nature of high-powered electric air blowers for commercial use; environmental control apparatus, namely, air curtains in the nature of air blowers for promoting energy conservation, flying insect control, and efficiently separating rooms with two different temperatures

Backpack vacuum cleaners, upright vacuum cleaners, and canister vacuum cleaners; vacuum cleaner parts and accessories, namely, vacuum cleaner wands, vacuum cleaner hoses, vacuum cleaner dust brushes, vacuum cleaner suction nozzles, vacuum cleaner upholstery tools, vacuum cleaner crevice tools, vacuum cleaner hose reducer cuffs, and overhead pipe cleaning wands for vacuum cleaners; vacuum cleaner floor tools for use on carpeted floor surfaces, namely vacuum cleaner brushes; vacuum cleaner floo...

Backpack vacuum cleaners, upright vacuum cleaners, and canister vacuum cleaners; vacuum cleaner parts and accessories, namely, vacuum cleaner wands, vacuum cleaner hoses, vacuum cleaner dust brushes, vacuum cleaner suction nozzles, vacuum cleaner upholstery tools, vacuum cleaner crevice tools, vacuum cleaner hose reducer cuffs, and overhead pipe cleaning wands for vacuum cleaners; vacuum cleaner floor tools for use on carpeted floor surfaces, namely vacuum cleaner brushes; vacuum cleaner floo...

Education and training services, namely providing educational classes, seminars, group and individual training on intelligent, adaptive hearing and communication techniques in combat, in battlefield conditions, in military, military special forces and law enforcement activities, in noisy aircraft, watercraft and vehicle environments, and in highly stressful, noisy and difficult environments; providing educational classes, seminars and conferences, and training services in the field of audiolo...