Complex sentence: According to many sources on the Internet, the Mortgage Lifter was not developed by Willam Estler, but by M.C. "Radiator Charlie" Byles in the early 1930s in Logan, West Virginia.
Split into simpler sentences: According to many sources on the Internet, the Mortgage Lifter was not developed by Willam Estler. Instead, it is said to have been developed by M.C. "Radiator Charlie" Byles in Logan, West Virginia.