Granted Patent
Utility
US 5,912,621 · App. 08/892,138
Cabinet security state detection
Inventor:
Thomas Schmidt
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Jul 14, 1997
Inventor
Thomas Schmidt
Assignee (at issue)
Digital Equipment 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.