Granted Patent
Utility
US 5,477,210 · App. 08/322,713
Proximity monitoring apparatus employing encoded, sequentially generated, mutually orthogonally polarized magnetic fields
Inventor:
Donald K. Belcher
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Oct 12, 1994
Inventor
Donald K. Belcher
Assignee (at issue)
HARRIS 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.