Hobart Corporation introduced the KitchenAid Model K45 Stand Mixer in 1941. These early KitchenAid mixers were built to last and quickly gained popularity for their reliability and performance. The K45 model had a 4.5-quart capacity, a tilt-head design, and several attachments that made it versatile for various mixing tasks in the kitchen. In 1986, Whirlpool Corporation acquired the KitchenAid brand from Hobart Corporation. Despite the change in ownership, Whirlpool continued to manufacture and sell the iconic KitchenAid stand mixers, including the K45 model, under the KitchenAid name. The K45 model underwent some updates and improvements over the years to keep up with evolving consumer demands and safety standards. The K45 model was eventually replaced with the KitchenAid KSM150 series, which was introduced in the 1990s. The KSM150 series featured a more powerful motor, a 5-quart capacity, and improved design elements while retaining the classic look and durability of the original K45 model. Although the exact timeline of the K45 model's discontinuation is not readily available, it is safe to say that Hobart produced the KitchenAid K45 stand mixers from 1941 until at least the late 1980s or early 1990s when the KSM150 series was introduced. Even after the introduction of the KSM150 series, some K45 mixers continued to be sold and used for several years until existing stock was depleted. Today, KitchenAid continues to be one of the leading brands for stand mixers, offering various models with advanced features and capabilities. However, the original K45 model remains an iconic symbol of the brand's heritage and quality craftsmanship. Collectors and enthusiasts still appreciate and cherish these vintage K45 mixers for their historical significance and performance.