ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,954, issued on Dec. 2.
"Christmas tree decoration lights and connection method" was invented by Cheng-Hung Tsai (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are Christmas tree decoration lights and a connection method, the Christmas tree decoration lights include a first-level connecting structure being composed of a first-level main plug and a first-level branch plug, a second-level connecting structure being composed of a second-level main plug and a second-level branch plug, and a third-level connecting structure being composed of a third-level plug and lamp tubes; the first-level main plug is connected with a connecti...