9 Electric, electronic and optical measuring, signalling and checking (supervision) apparatus and instruments included in class 9, in particular electric apparatus and instruments for electro-acoustics and parts therefor; apparatus and instruments for recording, transmission and reproduction of audio signals and parts thereof, included in class 9; transmitters, receiving apparatus, in particular HF receivers, HF input modules, apparatus for recording and reproduction of electric signals, in particular sound signals, apparatus for the wireless transmission of acoustic information; data carriers containing programs, software, in particular on floppy discs, tapes, discs; electro-acoustic and visual identifiable guide systems, including multi-lingual guide systems, consisting of transmitters, receivers, in particular sound signal receivers and headphones; apparatus for sending, transmitting and receiving sound or video signals, in particular high frequency sound transmitting apparatus and sound transmitting technology apparatus, transmitting devices, in particular pocket transmitters and receivers, pocket UHF and VHF transmitters and receivers and parts therefor, diversity receivers, small handsets, spot recording apparatus, in particular wide band transmitters with command receivers, return channel transmitters, diversity program receivers, command transmitters; aerials, apparatus for narrow band and wide band systems in sound transmitting technology, transmitters, in particular multi-channel transmitters and single channel transmitters, infra-red transmitters, receivers, in particular multi-channel, single-channel and double-channel receivers; head sets, chin strap receivers, and parts for the aforesaid goods; apparatus for sound transmission and sound reproduction apparatus, infra-red and HF transmitters and receivers, in particular mono, stereo, double-channel and chin strap receivers, hearing and speech attachments, conference installations, apparatus for analogue and digital transmission of audio, video and data signals, software for the aforesaid systems for control, tuning and checking, apparatus and instruments for conferencing and telecommunications technology, flight safety, reporting and military communications; microphones, in particular dynamic microphones, condenser microphones, electret microphones, head strap microphones, swan-neck microphones, directional microphones, wireless microphones, plug-in microphones, microphones with integrated transmitters, in particular condenser microphones with in-built high frequency transmitters, microphone modules, solo microphones, pressure microphones, two-way switch microphones, interfacial microphone modules, interfacial microphones, microphone capsules and parts for the aforesaid goods, microphone isolating distributors, transformers, microphone cases, electro-acoustic transformers, in particular headphones, dynamic headphones, electrostatic headphones, wireless headphones, headphones for use in aeroplanes, buses and trains, in particular with infra-red or high frequency transmission, headphones with active noise compensation, loudspeakers, parts and fittings for electro-acoustic transformers and headphones, namely ear pads, volume controls, amplifiers, in particular high end and thermionic amplifiers, accumulator contacts, socket charging apparatus, handset cables.
10 Technical medical apparatus, audiology technology apparatus and instruments, electric hearing aids, hearing amplifiers, electrically operated hearing aids, speech therapy apparatus, transmission and reproduction apparatus for deaf and partially deaf people.
37 Maintenance of electro-acoustic devices, transmitters, receivers and headphones used, in particular, in museums, exhibitions and theatres.
38 Broadcasting and receiving of signals in the context of a local radio station, also multilingually, in particular for museums, exhibitions and theatres; running of a radio communication service, in particular a local radio communication service; rental of electro-acoustic devices, transmitters, receivers and headphones used, in particular, in museums, exhibitions and theatres.
41 Organisation of a guide service using electro-acoustic and visually identifiable guide systems, including multi-lingual guide systems, consisting of transmitters, receivers, in particular sound signal receivers and headphones.