Granted Patent
Utility
US 5,718,136 · App. 08/521,890
Lost key lock-out cylinder
Inventors:
Raymond Aldieri, Jerome V. Andrews, John Carl Bergstrom, Thomas J. DiVito
Patented Case
View Patent ↗
Granted: Feb 17, 1998
Filed: Aug 31, 1995
Inventors
Raymond Aldieri
Jerome V. Andrews
John Carl Bergstrom
Thomas J. DiVito
Assignee (at issue)
Kaba High Security Locks Corporation
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.