ALEXANDRIA, Va., July 16 -- United States Patent no. 12,671,795, issued on June 30, was assigned to Zhuhai RaySharp Technology Co. Ltd (Zhuhai, China).
"Video door bell" was invented by Shengjun Li (Zhuhai, China) and Hao Zhang (Zhuhai, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a video door bell, aiming at providing a video door bell which is capable of shooting full-body images, convenient to install and use, and high in security. The video door bell includes a door bell body, a front end face of which has a first inclined surface, wherein a mounting frame is disposed inside the door bell body and has a second inclined surface, an infrared sensor and a lens are disposed on the second...