ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,381, issued on Feb. 3.
"Suction-target guide pipe and suction-target suction system" was invented by Naoyuki Ishikita (Niigata, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A suction-target guide pipe that is connected to a suction tube of a suction device includes a guide-pipe main body that includes a connecting portion to be connected to the suction tube, a lid that is provided at an end of the guide-pipe main body and that has an outer peripheral surface and an opening on a distal end side, the outer peripheral surface being formed of a tapered surface whose diameter increases from the distal end to a proximal end, and an end cap that is ...