3 ms·

Here's some of the utility patents: https://www.lens.org/lens/patent/US_8255828_B2 https://www.lens.org/lens/patent/US_8255828_B2 https://www.lens.org/lens/pa

Here's some of the utility patents: https://www.lens.org/lens/patent/US_8255828_B2 https://www.lens.org/lens/patent/US_8255828_B2 https://www.lens.org/lens/patent/US_7703036_B2 https://www.lens.org/lens/patent/US_7703036_B2 Source: http://www.ipwatchdog.com/2018/02/13/93710/id=93710/ http://www.ipwatchdog.com/2018/02/13/93710/id=93710/