Inventor

HAAGENSTAD JEFF D

US3 patents

Patents

3 patents

US6437561B1Aug 20, 2002

System for determining the position of an object with respect to a magnetic field sources

3M INNOVATIVE PROPERTIES CO38 citations92

US6972559B2Dec 6, 2005

Distance detection system

3M INNOVATIVE PROPERTIES CO5 citations70

US6566868B2May 20, 2003

Distance detection system

3M INNOVATIVE PROPERTIES CO2 citations59