ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,513,795, issued on Dec. 30, was assigned to LEEDARSON LIGHTING Co. LTD. (Fujian, China).
"Lighting apparatus" was invented by Shuisheng Wen (Fujian, China) and Zhulong Liu (Fujian, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A lighting apparatus includes a light source, a driver circuit, a detector circuit and a current source. The driver circuit has a first electrode and a second electrode. The first electrode and the second electrode are configured for being coupled to two first output terminals of an external AC power source and also coupled to two second output terminals of an emergency DC power module. The detector circuit is coupled to th...