IP Library Granted Patent US 5,718,136
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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 5,718,136
App. No.
08/521,890
Filed
1995-08-31
Granted
1998-02-17
Kind
A