Vardon, D. (Inventor), Christensen, S. (Inventor), Hurst, K. (Inventor), Maurer, A. (Inventor) & Griffin, M. (Inventor), 2021, Patent No. 11,167,281 B2, 9 Nov 2021
Vardon, D. (Inventor), Christensen, S. (Inventor), Hurst, K. (Inventor), Settle, A. (Inventor) & Griffin, M. (Inventor), 2021, Patent No. US 10,894,760 B2, 19 Jan 2021