李永伟

Combined device for float casing arrangement and check valve well cementation

李康, 张雪峰, 党军, 2013 .

Multifunctional intelligent headset, multifunctional intelligent headset system and communication method of multifunctional intelligent headset system

张尚国, 彭宗伟, 李永伟, 2015 .

General remote controller code arrangement method

李永伟, 2015 .