PW Richards, TS Elliot, SGJ Yuen - US Patent 9,044,149, 2015 - Google Patents
No. 61/830,600, filed on Jun. 3, 2013, provisional 2013, OO73255 A1 3/2013 Yuen et al.
application No. 61/662.961, filed on Jun. 22, 2012, 2013/0077826 A1 3/2013 Cowperthwaite …