Granted Patent
Utility
US 6,553,161 · App. 09/805,763
Magnetic fluid-based positioning apparatus and method
Inventor:
Eric L. Upton
Patented Case
View Patent ↗
Granted: Apr 22, 2003
Filed: Mar 13, 2001
Inventor
Eric L. Upton
Assignee (at issue)
Terabeam Corporation
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.