Siregar, K. N. (Inventor), Kurniawan, R. (Inventor), Utomo, B. (Inventor), Eryando, T. (Inventor), Nur, R. J. B. (Inventor), Nuridzin, D. Z. (Inventor) & Riyadi (Inventor), 2020, Patent No. EC00202017603
Eryando, T. (Inventor), Kurniawan, R. (Inventor), Utomo, B. (Inventor), Siregar, K. N. (Inventor), Nur, R. J. B. (Inventor), Nuridzin, D. Z. (Inventor), Riyadi (Inventor), Retnowati (Inventor), Yuliyanti, S. (Inventor), Zikri, M. (Inventor), Dinuna, D. (Inventor) & M. Iqbal, S. R. (Inventor), 2020, Patent No. EC00202017623