Granted Patent
Utility
US 5,490,697 · App. 08/226,682
Access control assembly
Inventor:
Walter E. Surko, Jr.
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Apr 12, 1994
Inventor
Walter E. Surko, Jr.
Assignee (at issue)
International 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.