What is the patent of Midea's microwave oven?

Magnetron According to Sohu News, a magnetron was an invention patent applied by Midea Group Co., Ltd. on June 6, 2009, which set a new milestone for the development of microwave ovens. Midea Group 1968 was founded in Shunde, Foshan, and is now headquartered in Beijiao Town, Shunde District, Foshan City, Guangdong Province.