Electronic conference and communications systems, consisting of control apparatus, receiving and sending units, voting machines, parts and fittings therefor, in particular microphones, headphones, loudspeakers, mains voltage power supply units, electrical plugs and sockets, modems and electrical cables

'apparatus':9 'cabl':37 'communic':4 'confer':2 'consist':6 'control':8 'electr':30,36 'electron':1 'fit':18 'headphon':23 'loudspeak':24 'machin':15 'main':25 'microphon':22 'modem':34 'part':16 'particular':21 'plug':31 'power':27 'receiv':10 'send':12 'socket':33 'suppli':28 'system':5 'therefor':19 'unit':13,29 'voltag':26 'vote':14

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