Granted Patent
Utility
US 6,595,563 · App. 09/951,795
Electric strike field-selectable fail-safe/fail-secure mechanism
Inventor:
Brent Kiernan
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Sep 13, 2001
Inventor
Brent Kiernan
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.