Granted Patent
Utility
US 5,994,880 · App. 09/056,321
Giant magnetroresistive ratio sensing system
Inventor:
Frank R. Dropps
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Apr 7, 1998
Inventor
Frank R. Dropps
Assignee (at issue)
Angeion Corp.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.