St. Paul, Minnesota
United States
4
2008-02-21
David A. Sandquist from St. Paul, US has applied for patents for these inventions. The list has both pending applications and granted patents:
Magnetic toroid self resonant current sensor
#2 | 2006-08-31Current sensor with magnetic toroid single frequency detection scheme
#3 | 2006-08-31Current sensor with magnetic toroid dual frequency detection scheme
#4 | 2006-08-31Current sensor with magnetic toroid
4120771 ⎘