I gooooogled it [0], the patent was filed on 10/11/2009 (I'm British, so read that as dd/mm/yyyy). Some of the other patents listed go back a few years [1]. [0

I gooooogled it [0], the patent was filed on 10/11/2009 (I'm British, so read that as dd/mm/yyyy). Some of the other patents listed go back a few years [1]. [0] http://www.google.com/patents/US8255379 http://www.google.com/patents/US8255379 [1] https://www.google.com/patents/US5889522 https://www.google.com/patents/US5889522