ALEXANDRIA, Va., July 16 -- United States Patent no. 12,357,155, issued on July 15.
"Endoscope-pipe" was invented by Fang Lei (Durchhausen, Germany) and Ulrich Weiger (Kolbingen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An endoscope pipe with a central, elongated observation window on the distal end, whereby several light outlet openings for fiberoptic end surfaces are positioned close to the observation window for illuminating the angle area observed through the observation window and the light outlet openings are positioned asymmetrically in relation to the longitudinal extension of the observation window and/or the fiberoptic end surfaces are held in the light outlet openings in such a way t...