intercommunication and telephone apparatus, namely, video intercoms, intercoms; video intercom systems, comprising intercom cameras, telephone receivers, telephone transmitters and parts therefor

INTERCOMS, SIMPLEX AND DUPLEX INTERCOMS OF SINGLE AND MULTIPLE STATIONS, TELEPHONE, DESK AND VIDEO INTERCOMS, SWITCHBOARD INTERCOMS AND VESTIBULE DIRECTORY PLATES AND PANELS WITH BUILT IN BUZZERS WITH AND WITHOUT INTERCOMS

TELEPHONES AND INTERCOMS