NORBELL

Audio alert devices comprised of non-electric door chimes; Audio alert device kits primarily comprised of non-electric door chimes; Audio alert devices comprised of non-electric door chimes sold as an integral component of mechanical door closers in the nature of metal spring-loaded door closers and metal hinge pin door closers, and metal pivot hinges and metal pivot hinge sets for controlled closing of doors

Audio alert devices comprised of non-electric door chimes sold as an integral component of hydraulic door closers and electromechanical door openers and closers