D381477 Combined vacuum cleaner with fragrance dispenser or carpet shampooer July, 1997 Ingram D32/21 D349369 Vacuum cannister August, 1994 Adams D32/21 D294187 Housing for a central vacuum cleaner February, 1988 Bertuzzo D32/21 D242482 N/A November, 1976 Fyffe D32/23 D214083 N/A May...