ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,235, issued on June 23, was assigned to ZHONGSHAN QINGYI METAL PRODUCTS ENTERPRISE Co. LTD. (Zhongshan City, China).

"Anti-freeze water gun structure" was invented by Shulong Li (ZhongShan City, China), Weizhong Qian (ZhongShan City, China), Kun Guang Wu (ZhongShan City, China) and Tang Chieh Yu (Taichung City, Taiwan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An anti-freeze water gun structure has a gun body. The gun body has a water passageway therein, a water inlet at a lower end thereof, and a water chamber between the water passageway and the water inlet. A guide tube is provided in the water chamber. A slidable piston is fitted onto the gu...