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Arend L. Hagedoorn
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Voorschoten, NL
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Patents Grants
last 30 patents
Information
Patent Grant
Motion transducer
Patent number
7,518,954
Issue date
Apr 14, 2009
Input/Output, Inc.
Arend L. Hagedoorn
G01 - MEASURING TESTING
Information
Patent Grant
Geophone with mass position sensing
Patent number
7,505,369
Issue date
Mar 17, 2009
Input/Output, Inc.
Arend L. Hagedoorn
G01 - MEASURING TESTING
Information
Patent Grant
Double-ended geophone
Patent number
6,922,374
Issue date
Jul 26, 2005
Input/Output, Inc.
Arend L. Hagedoorn
G01 - MEASURING TESTING
Patents Applications
last 30 patents
Information
Patent Application
Motion Transducer
Publication number
20080001597
Publication date
Jan 3, 2008
Input/Output, Inc.
Arend L. Hagedoorn
G01 - MEASURING TESTING
Information
Patent Application
GEOPHONE WITH MASS POSITION SENSING
Publication number
20070223314
Publication date
Sep 27, 2007
Input/Output, Inc.
Arend L. Hagedoorn
G01 - MEASURING TESTING