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Andrew A. Porterfield
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Sacramento, CA, US
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Patents Grants
last 30 patents
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Patent Grant
Vehicle mounted crash attenuator
Patent number
6,905,282
Issue date
Jun 14, 2005
Energy Absorption Systems, Inc.
Patrick A. Leonhardt
B60 - VEHICLES IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
Vehicle mounted crash attenuator
Publication number
20040145173
Publication date
Jul 29, 2004
Patrick A. Leonhardt
B60 - VEHICLES IN GENERAL
Information
Patent Application
Vehicle mounted crash attenuator
Publication number
20030077119
Publication date
Apr 24, 2003
Energy absorption system, Inc.
Patrick A. Leonhardt
B60 - VEHICLES IN GENERAL