Wet grinders have two advantages over electric mixers or blenders. KitchenAid began manufacturing blenders and other small appliances in the mid-1990s. Blendtec is a company that sells commercial and residential blenders. Common household uses are washing machines, food blenders and window-winders. Food processors are similar to blenders in many forms. D.E. Master Blenders 1753 later bought Norway's Kaffehuset Friele coffee manufacturer. Osterizer blenders tended towards heavy construction and motors. Arbor Mist also manufactures "wine blenders" as well. The first immersion blenders were patented in the 1950s. Glass blenders are heavier and more stable. The bottle shape for Reserve Collection is similar to Blenders Pride but has embossing. Craigellachie Distillery Co. Limited, a group of blenders and merchants led by Alexander Edward. Most modern blenders offer a number of possible speeds. Some products, such as blenders and vehicles, with a silvery-white color are identified as "platinum". Walita were the first manufacturer to release a wide range of blenders in the 1940s.