ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,458,187, issued on Nov. 4.
"Air outlet structure of vacuum cleaner with aroma generation" was invented by Yu Yang (Shaoyang, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air outlet structure of a vacuum cleaner with aroma generation includes an air duct, an airflow generating device, an air filtering device, and an aroma sheet. The airflow generating device is configured to generate airflow in the air duct, and the air filtering device and the aroma sheet are disposed in the air duct. The air filtering device is disposed at one end of each of air outlets of the air duct, and the air filtering device divides the air duct into an inner air duct ...