|The Hoover Company Historic District is being nominated under Criterion A: in the area of Commerce, Industry and Invention. In 1908 James Murray Spangler invented the first upright vacuum, naming it the Electric Suction Sweeper. He sold his patent to his in-law William Henry Boss Hoover who was a leather-goods manufacturer in New Berlin, Ohio (present day North Canton). On August 8, 1908, the Electric Sweeper Suction Company was formed, later to be renamed the Hoover Company. Hoover advertised the product in the December5th issue of the Saturday Evening Post, offering customers 10 days free use of his vacuum. At years end 1908, the company had sold 372 Model O's. The Hoover Company Resale Plan of Operation and other marketing and sales strategies were imperative to the company's early success. Boss Hoover also established a research and development department in 1909 which provided the company with numerous patents and improved products that maintained the company as an industry leader. Hoover inventions and innovations included such items as Positive Agitation, the first cylinder cleaner, the clean air principle, rubberized hose and convenience features like a headlamp, automatic height adjustments, self-mounted hose, and disposable bags.