J Mikkelsen, R Freidson - US Patent 9,219,810, 2015 - Google Patents
(60) Provisional application No. 60/301,681, filed on Jun. 4,817,203 27, 2001, provisional
application No. 60/303,115, 4,818,048 filed on Jul. 3, 2001, provisional application No. 3.23 …