David P. SUTHERLAND

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Roanoke, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Cylinder lock and auxiliary locking mechanism
- Patent number 8,186,194
- Issue date May 29, 2012
- Medeco Security Locks, Inc.
- Peter H. Field
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Hierarchical cylinder lock systems
- Patent number 7,797,973
- Issue date Sep 21, 2010
- Medeco Security Locks, Inc.
- Peter H. Field
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

Information Patent Application
Cylinder Lock and Auxiliary Locking Mechanism
- Publication number 20090241620
- Publication date Oct 1, 2009
- MEDECO SECURITY LOCKS, INC.
- Peter H. FIELD
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
HIERARCHICAL CYLINDER LOCK SYSTEMS
- Publication number 20080223097
- Publication date Sep 18, 2008
- MEDECO SECURITY LOCKS, INC.
- Peter H. Field
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES