Chemistry apparatus and instruments; electrolysers; scientific research and laboratory apparatus; educational apparatus and simulators; recorded content; databases (electronic); software; downloadable mobile applications; electrolysers connected in series; electrolysers connected in parallel; electrolyser solutions (term considered too vague by the International Bureau pursuant to Rule 13 (2) (b) of the Regulations); electrolysers in a containerised solution (term considered too vague by the ...