Granted Patent
Utility
US 6,246,231 · App. 09/363,034
Magnetic field permeable barrier for magnetic position measurement system
Inventor:
Westley S. Ashe
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Jul 29, 1999
Inventor
Westley S. Ashe
Assignee (at issue)
Ascension Technology 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.