ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,762, issued on Nov. 25, was assigned to Dongguan Qinshi Jewelry Co. Ltd. (Guangdong, China).
"Breathing adjustment apparatus" was invented by Wei Tao (Hunan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a breathing adjustment apparatus, comprising: a body provided with a breathing channel, the body being of a hollow tubular structure; a first opening disposed at one end of the body and configured to be inserted into the mouth of a user; a second opening in communication with the first opening, wherein the second opening is disposed at the other end of the body and configured for exhalation; and an inner core housed within the bo...