US Patent 7911877 Active noise cancellation through the use of magnetic coupling
Patent 7911877 was granted and assigned to Baker Hughes on March, 2011 by the United States Patent and Trademark Office.
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Patent abstract
Passive suppression of casing signals is used to improve the ability to measure formation velocities. Passive suppression includes the use of a magnet slidably coupled to the casing.
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Patent Inventor Names
Alexei Bolshakov0
Douglas J. Patterson0
Xiao Ming Tang0
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Official Website
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US Patent 07911877 Active noise cancellation through the use of magnetic coupling US Patent 7911877 Active noise cancellation through the use of magnetic coupling
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Patent Number
079118770
Patent Number
79118770
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
079118770
Date of Patent
March 22, 2011
0Patent Application Number
126466940
Date Filed
December 23, 2009
0Official Website
Patent Primary Examiner
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US Patent 07911877 Active noise cancellation through the use of magnetic coupling
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07911877
Date of patent
March 22, 2011
Patent application number
12646694
Date Filed
December 23, 2009
Patent primary examiner
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