Granted Patent
Utility
US 5,525,880 · App. 08/376,160
Pressure-actuated exit door access bar for an electronic delayed egress locking system
Inventors:
Arthur Geringer, Richard Geringer, David Geringer
Patented Case
View Patent ↗
Granted: Jun 11, 1996
Filed: Jan 20, 1995
Inventors
Arthur Geringer
Richard Geringer
David Geringer
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.