Patterson Companies Inc is a medical supplies conglomerate primarily in the business of veterinary and dental products (ranging from xray equipment to consumable products, dental consumables make up the biggest part of the dental industry). Since 2003 it also distributes general medical rehabilitative devices like braces and wheel chairs. Traditionally a dental company it diversified its business at the turn of the millennium when it acquired 55-year-old company JA Webster Inc, a distributor of veterinary products. That business segment (now known as Patterson Veterinary) currently distributes equipment (diagnostic and surgical) and medicine (anaesthetics, vaccines). The company operates directly in only the US and Canada (in Canada through subsidiaries Sammons Preston Canada and Patterson Dental Canada).