ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,089, issued on Oct. 21, was assigned to ZHONGSHAN DASHAN PHOTOGRAPHIC EQUIPMENT Co. LTD. (Zhongshan, China).
"One-step locking stand" was invented by Xihua Zhu (Guangdong, China) and Jinhua Duan (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A one-step locking stand includes a fixing portion and at least one supporting leg connected to the fixing portion. The supporting leg includes first, second, and third sections axially connected to one another; an operating assembly arranged at one of the sections; a first transmission assembly connected to the operating assembly; a first locking assembly fixedly arranged at the second section...