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Engineering Patent Timeline
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Updated 18 Dec 2019
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Created by
Shannon Austria
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Door Lever Lock #US7334824B2 Inventor: Sundberg: Kaiser Publication Date: 2.26.2004 Status: Expired (Fee Related)
Device For Childproofing a Door Lock #US0090266121A1 Inventor: Craig Publication Date: 10.29.2009 Status: Active Until - 11.4.2030
Safety Lock For Lever-Type Door Handles #US7416230B2 Inventor: G.C. Konstantakis: G.L. Konstantakis Publication Date: 8.26.2008 Status: Active Until 6.26.2024
Door Cuff #US20120103668A1 Inventor: McKinney Publication Date: 4.17.2014 Status: Abandoned - 12.6.2019
Lever Lock Assembly #US5809815A Inventor: Chih-Hsing Publication Date: 8.29.1996 Status: Expired - Fee Related
Quick Install Door Knob Assembly #CA2422445C Inventor: Nakasone: Armstrong Publication Date: 7.9.2002 Status: Active Until 7.16.2022
Child Safe Door Knob #US2009028652A1 Inventor: Maramba Publication Date: 11.19.2009 Status: Abandoned
Motor Vehicle Door Lock #DE19619824A1 Inventor: Handke: Scholz Publication Date: 10.29.1997 Status: Expired - Fee Related
Child Safety Cover #US7802828B2 Inventor: Hopkins: Dyskra Publication Date: 9.28.2010 Status: Expired Anticipated - 3.13.2029
Door Latch With Blockout Child Safety Feature #CA2025496A1 Inventor: Portelli: Dzurko; Rimbey Publication Date: 4.17.1990 Status: Expired - 12.10.2019
Door Latch and Lock Mechanism #US2989332A Inventor: Publication Date: 6.20.1958 Status: Expired - Lifetime
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