Current rectifiers; uninterruptible electrical power supplies; integrated circuits; voltage stabilizers; chargers for electric batteries; intercommunication apparatus; accumulators, electric; converters, electric; electric apparatus for commutation; converter; network communication equipment; electro-dynamic apparatus for the remote control of signals; distribution boards [electricity]; distribution boxes [electricity]; inverters [electricity]; voltage stabilizing power supply; accumulator boxes.

Commutators; uninterrupted power supply; integrated circuits; manostat; battery chargers; intercommunication apparatus; electric accumulators; transformers; apparatus for electric commutation; converter (terms too vague in the opinion of the International Bureau - Rule 13(2)(b) of the Common Regulations)