
US9661552 | page 2 | https://thedailydialectics.com/pdfs/wipow/US9661552/US9661552.pdf
US 9,661,552 B2 Page 2 (56) 2007/00839 15 2007/0116471 2007/027 1339 2008/0086448 2009/0121940 2009/0219941 2010/0057541 2010/0128695 2010/0183053 2010/0208621 2011/0035491 2011/0106624 2011/0116389 2011/0228696 2012/00 15665 2012/0173620 2013/0121686 2013/0164715 2014/0018095 2014/0039823…