ALEXANDRIA, Va., May 5 -- United States Patent no. 12,617,500, issued on May 5.
"Rolling reduction boat" was invented by Seong Su An (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure relates to a rolling reduction boat, and more particularly, to a rolling reduction boat having a structure that allows a rolling reduction tube, which is formed to surround a boat main body, to be filled with water. The present disclosure has the following advantageous effects. That is, according to the present disclosure, by filling a rolling reduction tube, which surrounds a boat main body, with water, there are advantages that the overall weight of the boat is increased, and the center ...