Patent Over the years AMT & Harry Sanford applied for and where granted a number of US patents. They include: D0228757 AutoMag 23 Oct 1973 3780618 AutoMag 25 Dec 1973 3889574 AutoMag 17 June 1975 D0316587 AutoMag II 32 Apr 1991 D0342422 Eating Utensil 21 Dec 1993 D0363107 Backup 10 Oct 1995