首页>
外国专利>
Circuit arrangement for keys controlled activation of a work station to one of a plurality of connection line conduit is closed by means of support, in particular to figure by means of telephone by means of support, in addition to represent systems
Circuit arrangement for keys controlled activation of a work station to one of a plurality of connection line conduit is closed by means of support, in particular to figure by means of telephone by means of support, in addition to represent systems