Sound alarms; antennas; alarm bells, electric; altimeters; amplifers; anode batteries, high tension batteries; anodes; answering machines; anti-glare glasses; anti-theft warning apparatus; apparatus and instruments for astronomy; apparatus for editing cinematoraphic film; apparatus for measuring the thickness of skins; audio interfaces; audio mixers; audio- and video-receivers; audiovisual teaching apparatus; automatic indicators of low pressure in vehicle tyres; baby monitors; baby scales; b...