ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,461,601, issued on Nov. 4.

"Bluetooth keyboard with a protective case for a tablet PC" was invented by Xiaomei Zheng (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A Bluetooth keyboard with a protective case for a tablet PC is disclosed, including a keyboard body, a protective case for fixed installation of the tablet PC, a swivel base, and a locking member. The keyboard body is provided with a positioning sleeve, a lower end of the swivel base is configured to be rotatably inserted in the positioning sleeve and rotatable relative to the positioning sleeve around a first axis of rotation. The locking member is removably mounted in the mo...