Granted Patent
Utility
US 5,778,708 · App. 08/803,410
Door locking mechanism for safes
Inventors:
Gauis P. Crosby, Terry Zierenberg
Patented Case
View Patent ↗
Granted: Jul 14, 1998
Filed: Feb 20, 1997
Inventors
Gauis P. Crosby
Terry Zierenberg
Assignee (at issue)
Liberty Safe and Security Products, Inc.
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.