Lighting
| Fri 26 Jul 2024
Beijing, July 26 -- Cao Songlin has been granted a patent for vertical sky lamp. The patent application number is CN202321228615U 20230519. The patent publication number is CN220082869 (U). International Patent Classification codes are F21S6/00, F21V15/01, F21V19/00, F21V23/00, F21V3/00, F21V3/02, F21V8/00, F21Y105/18 and F21Y11..