Granted Patent
Utility
US 6,725,696 · App. 09/485,799
Disc tumbler lock and key
Inventors:
Brian Blight, Hans J. Esser
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Feb 15, 2000
Inventors
Brian Blight
Hans J. Esser
Assignee (at issue)
Lockwood Australia Pty Ltd.
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.