Corvette Patent Art Wall Hanging | Corvette Enthusiast Lover Framed Print 16x20 Patent artwork and application submitted by William Mitchell to the US Patent & Trademark Office in 1966. Makes a great Corvette Enthusiast Lover gift. Size is 16x20 Art is double-matted and presented in a high-quality wood & glass frame Makes a great Corvette Enthusiast Lover gift! Available framed or unframed...can be PERSONALIZED, too!