Granted Patent
Utility
US 6,622,534 · App. 09/661,689
Dead bolt system having multiple security features
Inventors:
J. Clayton Miller, Thomas E. Jasper, Joseph G. DeSieno, Albert L. Akers
Patented Case
View Patent ↗
Granted: Sep 23, 2003
Filed: Sep 14, 2000
Inventors
J. Clayton Miller
Thomas E. Jasper
Joseph G. DeSieno
Albert L. Akers
Assignee (at issue)
Lockmasters, 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.