Granted Patent
Utility
US 5,924,652 · App. 08/939,777
Island presence detected
Inventor:
Forrest H. Ballinger
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Sep 29, 1997
Inventor
Forrest H. Ballinger
Assignee (at issue)
Harmon Industries, LLC
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.