Granted Patent
Utility
US 5,923,249 · App. 08/860,892
Door security system
Inventor:
Robert Linley Muir
Patented Case
View Patent ↗
Granted: Jul 13, 1999
Filed: Jul 11, 1997
Inventor
Robert Linley Muir
Assignee (at issue)
Aristocrat Leisure Industries Party Ltd.
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.