In T 1293/13 the claims limited the determination of air permeability of the garment to a particular method and to a particular machine ("Frazier 750"). However, the machine "Frazier 750" no longer existed, such that this machine could not be used for determination of the claimed values. The insertion of a feature defined as determinable by a specific machine which possibly was not – but certainly is no longer – publicly available, leads in this case to the invention not being disclosed in a manner sufficiently clear and complete for it to be carried out by a person skilled in the art.