ALEXANDRIA, Va., July 23 -- United States Patent no. 12,366,061, issued on July 22.
"Waterjet plunger" was invented by Moonchang Park (Guri-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Proposed is a water jet plunger. The water jet plunger is provided with a body part having a tubular shape and including a discharge port that can be opened and closed at one end thereof and a pressurizing part disposed inside the body part and capable of reciprocating in the longitudinal direction of the body part, so that as the pressurizing part presses the inside of the body part where water is accommodated, the discharge port provided at one end of the body part is opened by pressure generated by the pre...