Granted Patent
Utility
US 6,512,478 · App. 09/513,982
Location position system for relay assisted tracking
Inventor:
Charles Chien
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Feb 26, 2000
Inventor
Charles Chien
Assignee (at issue)
Rockwell Technologies, Inc.
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.