"The first vacuum was the 1908 Model O, which sold for $60. Subsequent innovations included the beater bar in 1919 ("It beats as it sweeps as it cleans"), disposal filter bags in the 1920s, and an upright vacuum cleaner in 1926." "The cleaner sold from 1936 to 1939 and was priced at $80 ($1,752 today)" This has many more features 100 years later.