Granted Patent
Utility
US 6,202,587 · App. 09/192,292
Method and apparatus for warning individuals of unsafe zones
Inventor:
Brian Stewart
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: Nov 16, 1998
Inventor
Brian Stewart
Assignee (at issue)
Jervis B. Webb International Company
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.