Gunardi, H. (Inventor), Puspitasari, H. A. (Inventor), Hendarto, A. (Inventor), Sidauruk, R. J. M. (Inventor), Soesanti, F. (Inventor) & Dini Fitriyanti (Inventor), 22 Mar 2022, Patent No. EC00202219482, 22 Mar 2022
Gunardi, H. (Inventor), Puspitasari, H. A. (Inventor), Hendarto, A. (Inventor), Sidauruk, R. J. M. (Inventor), Soesanti, F. (Inventor) & Dini Fitriyanti (Inventor), 22 Mar 2022, Patent No. EC00202219483, 22 Mar 2022
Gunardi, H. (Inventor), Puspitasari, H. A. (Inventor), Hendarto, A. (Inventor), Sidauruk, R. J. M. (Inventor), Soesanti, F. (Inventor) & Dini Fitriyanti (Inventor), 22 Mar 2022, Patent No. EC00202219484, 22 Mar 2022