ALEXANDRIA, Va., April 15 -- United States Patent no. 12,600,508, issued on April 14.
"Water polo water injection assembly and water polo water injection device" was invented by Bo Wang (Hebei, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention provides a water polo water injection assembly and a water polo water injection device. The water polo water injection assembly omits disassembly with an external water pipe or a water injection cylinder, is convenient to use, and is uniformly filled with water polo. The injection tube bundle is short in length, low in processing cost, wide in application range and low in water pressure requirement The water polo water injection device realizes continu...