Complex sentence: First developed by Dr. Vernon L. Nickel at Rancho Los Amigos National Rehabilitation Center in 1955, it was later improved by several companies including PMT Corporation, located in Chanhassen, Minnesota and Bremer Medical Inc. of Jacksonville, Florida.
Split into simpler sentences: First developed by Dr. Vernon L. Nickel at Rancho Los Amigos National Rehabilitation Center in 1955. It was later improved by several companies including PMT Corporation, located in Chanhassen, Minnesota and Bremer Medical Inc. of Jacksonville, Florida.