Enkeeo, posted at Amazon.com, posted on May 9, 2018, site visited Jul. 21, 2021. online, available from internet: https://images-na.ssl-images-amazon.com/images/l/61jfR2mTTNL._SX466_.jpg (Year: 2018). |
Bionic, posted at Amazon.com, posted on Oct. 28, 2018, site visited Jul. 21, 2021. online, available from internet: https://images-na.ssl-images-amazon.com/images/l/81Bvfw446AL._SX569_.jpg (Year: 2018). |
Budopt, posted at Budopt.ua, posted on Feb. 11, 2017, site visited Jul. 21, 2021. online, available from internet: https://budopt.ua/image/cache/1200-1200/data/item/brands/powerplay/nabor_powerplay_4022.jpg (Year: 2017). |
Communication dated Nov. 2, 2020 by the Patent Office of Taiwan in application No. 109301857. |