Abstract: An electrostatically charged rotating plate or cylinder is used to attract electrostatically charged particles in smoke to avoid pollution and improve the efficiency of the filtering process. The rotating plate is constantly cleaned from the ionized particles adhering to it and the particles so collected are removed without polluting the environment. This filtering system reduces capital and running costs compared with the present filtering systems.

Abstract: Computer program attached to communications system, like a central telephone exchange, of an office that organizes and controls appointments with individuals. Communication to and from individuals by electronic and other means concerning an appointment. Individualized and general advertising addressed to the said individuals waiting for an appointment.