The patent on the Delta robot was bought by the brothers Demaurex from EPFL in 1996. However, before the transaction took place, EPFL had already sold two licenses. The first one concerning the robots of small dimension (arm + parallelogram < 800 mm) was attributed exclusively to Demaurex in 1987. The second one, concerning robots of larger dimensions, was sold to AID and later resold to DeeMed. This company, bought later by the Swedish Elekta, specializes in the surgical domain and manufactures a Delta robot used to carry a heavy (20 kg) microscope (SurgiScope). The Delta robot technology was consequently sold to Medtronic at the end of 1999.