− | *US8546985B2, angemeldet 2009 durch Associacao Keppe and Pacheco. Erfinder: InventorNorberto da Rocha Keppe, Carlos César Soós, Roberto Heitor Frascari. | + | *US8546985B2, angemeldet 2009 durch Associacao Keppe and Pacheco. Erfinder: InventorNorberto da Rocha Keppe, Carlos César Soós, Roberto Heitor Frascari.<ref>https://patentimages.storage.googleapis.com/53/4d/fe/90cc01429bf4af/US8546985.pdf</ref> |