#6637704, #6637165, #6463704, #6460812, #6449912, #6361000, #6347493, #6019323, #5953870, #5839702, #6926236, #7168212 and AUS #737813, AUS #748160, AUS #749488, CAN #2251732, CAN #2319624, JAP #3723224, MEX #204995, MEX #229386, MEX #220889.

Other US and Foreign Patents Pending.