|
| US3935720 | 24 oct. 1974 | 3 févr. 1976 | | Rotatable cylinder lock |
| US3985010 | 21 oct. 1974 | 12 oct. 1976 | Lock Technology, Inc. | Method and apparatus for decoding twisting tumbler lock and twisting tumbler lock resistant thereto |
| US4356713 | 2 juil. 1980 | 2 nov. 1982 | GKN Stenman, AB | Cylinder lock and key |
| US4393673 | 2 juil. 1980 | 19 juil. 1983 | GKN Stenman AB | Cylinder lock |
| US4453432 | 2 août 1982 | 12 juin 1984 | GKN Stenman, AB | Method of manufacturing a key for a cylindrical lock |
| US4732022 | 14 oct. 1986 | 22 mars 1988 | Medeco Security Locks, Inc. | Key for an improved twisting tumbler cylinder lock |
| US4756177 | 23 janv. 1987 | 12 juil. 1988 | Widen Innovation AB | Lock and key blade |
| US4815307 | 23 janv. 1987 | 28 mars 1989 | Widen Innovation AB | Key blade and method of producing same |
| US4961333 | 5 janv. 1989 | 9 oct. 1990 | | Key lock with transfer tumblers and master keying |
| US5050412 | 25 févr. 1987 | 24 sept. 1991 | Costruzioni Italiane Serrature Affini C.I.S.A. S.p.A. | Flat key cylinder lock with anti-burglar features |
| US5079936 | 20 nov. 1990 | 14 janv. 1992 | Folger Adam Company | High security cylinder lock |
| US5209087 | 16 sept. 1992 | 11 mai 1993 | | High security removable core cylinder lock |
| US5289709 | 24 oct. 1991 | 1 mars 1994 | Medeco Security Locks, Inc. | Pin tumblers and corresponding keys for cylinder locks |
| US5375444 | 20 mai 1991 | 27 déc. 1994 | Shield Security Systems, Inc. | Multi-key core lock assembly |
| US5419168 | 7 déc. 1993 | 30 mai 1995 | Medeco Security Locks, Inc. | Hierarchical cylinder lock and key system |
| US5475998 | 27 mai 1994 | 19 déc. 1995 | Sargent Manufacturing Company | Lock assembly with locking bar |
| US5570601 | 25 janv. 1995 | 5 nov. 1996 | Medeco Security Locks, Inc. | Hierarchical cylinder lock and key system |
| US5615565 | 19 sept. 1995 | 1 avr. 1997 | Medeco Security Locks, Inc. | Keys for cylinder locks |
| US5682779 | 6 mars 1995 | 4 nov. 1997 | | Mechanically changeable cylinder lock and key with rotating pins |
| US5775145 | 5 févr. 1996 | 7 juil. 1998 | Algonquin Industries, Inc. | Lock assembly having a key operated removable plug |
| US5943890 | 31 oct. 1996 | 31 août 1999 | Medeco Security Locks, Inc. | Cylinder lock and key assembly and hierarchical system therefor |
| US6023954 | 6 déc. 1996 | 15 févr. 2000 | Medeco Security Locks, Inc. | Keys for cylinder locks |
| US6257154 | 28 févr. 2000 | 10 juil. 2001 | Algonquin Industries, Inc. | Cabinet having a lock assembly |
| US6441086 | 28 janv. 2000 | 27 août 2002 | Wacker - Chemie GmbH | Silicone rubber |
| US6564601 | 4 févr. 2002 | 20 mai 2003 | | Electromechanical cylinder plug |
| US6945082 | 1 oct. 2002 | 20 sept. 2005 | Medeco Security Locks, Inc. | Key blank, key and master keying system |
| US7412860 | 30 mars 2007 | 19 août 2008 | Medeco Security Locks, Inc. | Key blank and key |
| US7421869 | 31 août 2005 | 9 sept. 2008 | Alpha Corporation | Cylinder lock device |
| US7552608 | 18 juin 2008 | 30 juin 2009 | Medeco Security Locks, Inc. | Lock, key blank, and key of a hierarchical lock system |
| US7574883 | 3 mai 2007 | 18 août 2009 | Schlage Lock Company | Lock cylinder |
| US7594580 | 30 janv. 2006 | 29 sept. 2009 | Lab Security Systems Corporation | Lock pin decoding apparatus |
| US7775074 | 5 mars 2008 | 17 août 2010 | | System for obstructing movement of lock pins |
| US7775075 | 16 juil. 2009 | 17 août 2010 | Schlage Lock Company | Lock cylinder |
| US7788956 | 7 août 2009 | 7 sept. 2010 | Medeco Security Locks, Inc. | Lock, key blank, and key of a hierarchical lock system |
| US7797973 | 12 mars 2008 | 21 sept. 2010 | Medeco Security Locks, Inc. | Hierarchical cylinder lock systems |
| US7810918 | 7 nov. 2006 | 12 oct. 2010 | Xerox Corporation | One way compatibility keying for solid ink sticks |
| US7837313 | 16 juin 2008 | 23 nov. 2010 | Xerox Corporation | Method of reconfiguring ink sticks |
| US7837317 | 15 févr. 2008 | 23 nov. 2010 | Xerox Corporation | Solid ink stick with witness mark |
| US7854501 | 7 nov. 2006 | 21 déc. 2010 | Xerox Corporation | Common side insertion keying for phase change ink sticks |
| US7895865 | 14 août 2008 | 1 mars 2011 | Medeco Security Locks, Inc. | Cylinder lock assembly with a tailpiece rotationally coupled to the cylinder plug |
| US7963135 | 13 juil. 2010 | 21 juin 2011 | | System for obstructing movement of lock pins |
| US8122746 | 21 août 2007 | 28 févr. 2012 | | Electromechanical cylinder plug |
| US8141399 | 19 mai 2003 | 27 mars 2012 | | Electromechanical cylinder plug |