Delta Headphone Protector Delta Headphone Protector from Christopher Stein Delta Headphone Protector A sponsored project with Federal Mogul Corporation. Using a patent owned by Federal Mogul, Delta is comprised of two different designs that help keep headphones untangled and intact longer. gLike Delta Headphone Protector A sponsored project with Federal Mogul Corporation. Using a patent owned by Federal Mogul, Delta is comprised of two different designs that help keep headphones untangled and intact longer. Industrial Design Share R 7 n Christopher Stein Industrial Designer Philadelphia, PA Follow Contact