11 Apparatus for the exchange of substances and heat for use in the production of steam, for use in cooking and for use in refrigeration; Coffee machines, electric; Electric apparatus for making coffee; Electric coffee brewers; Electric coffee machines; Electric coffee makers; Electric coffee makers; Electric coffee roasters; Electric espresso machines; Powered coffee, seed and cocoa bean roasters; Reusable capsules, not of paper and sold empty, containing a filter for use in coffee brewing machines