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Dynamics Research and Manufacturing, Inc.
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Sacramento, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Impact barrier for vehicles
Patent number
4,008,915
Issue date
Feb 22, 1977
Dynamics Research and Manufacturing, Inc.
Grant W. Walker
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Impact barrier and restraint
Patent number
3,982,734
Issue date
Sep 28, 1976
Dynamics Research and Manufacturing, Inc.
Grant W. Walker
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information
Patent Grant
Roadway impact attenuator
Patent number
3,944,187
Issue date
Mar 16, 1976
Dynamics Research and Manufacturing, Inc.
Grant W. Walker
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Patents Applications
last 30 patents
Trademark
last 30 trademarks