The second one was issue on November 26, 2019 US 10,490,682 B2. and one more still in the stage of application.
NOTE: Patent applications are generally published 18 months after the earliest priority date of the application. According to the United States Patent and Trademark Office (USPTO), it takes about 22 months to get patent approval after going through the steps to file a patent. The time frame is 4 month from published to granted. Published patent US 2019 288 139 should be granted on or before Jan 19, 2020.