Granted Patent
Utility
US 5,904,384 · App. 08/903,972
Push pad trigger release exit device with infinite deadlocking
Inventors:
Gerald E. Mader, William P. Dye, Matthew S. Prucinsky
Patented Case
View Patent ↗
Granted: May 18, 1999
Filed: Jul 31, 1997
Inventors
Gerald E. Mader
William P. Dye
Matthew S. Prucinsky
Assignee (at issue)
Von Duprin 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.