US patent certificate2022.12.6/in NewsObtained the US patent certificate on December 02, 2022 /wp-content/uploads/2022/12/HAA-LOGO-2.png 0 0 agent01 /wp-content/uploads/2022/12/HAA-LOGO-2.png agent012022-12-06 12:06:532023-08-01 10:24:39US patent certificate