ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,447,299, issued on Oct. 21, was assigned to Gary Zhou (Mechanicsburg, Pa.).
"Dual suction tube" was invented by Gary Zhou (Guilford, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dual suction tube that includes a lower section, an upper section, and a transitional zone. The lower section includes at least one eyelet disposed at a distal end of the lower section. The upper section includes at least one port configured to be connected to a vacuum source. The transitional zone is between the lower section and the upper section, and has a first cross-sectional area at a proximal end of the transitional zone and a second cross-sectional area at a di...