Patterson Cos., Inc. engages in the research, development, and sale of dental, veterinary, and rehabilitation supplies. It operates through the following segments: Dental, Animal Health, and Corporate. The Dental segment distributes infection control, restorative materials, hand instruments, dental equipment, and sterilization products. The Animal Health segment markets and sells vaccines, parasiticides, and pharmaceuticals. The Corporate segment includes administrative expenses, office support costs, and customer financing. The company was founded by John Patterson and Myron Fayette Patterson in 1877 and is headquartered in St. Paul, MN.