US Patent 7401664 Top drive systems
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Patent Inventor Names
Cliff Swiontek0
Lawrence E. Wells0
Preston Fox0
Svein Stubstad0
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Patent abstract
A top drive system for wellbore operations, the top drive system including motor apparatus, a main shaft driven by the motor apparatus, the main shaft having a top end and a bottom end, a quill connected to the main shaft, and a gear system interconnected with the quill and the motor apparatus.
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US Patent 07401664 Top drive systems US Patent 7401664 Top drive systems
Infobox
Patent Number
074016640
Patent Number
74016640
Edits on 19 May, 2023
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Official Website
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Patent Jurisdiction
Patent Number
074016640
Date of Patent
July 22, 2008
0Patent Application Number
114145120
Date Filed
April 28, 2006
0Official Website
Patent Primary Examiner
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US Patent 07401664 Top drive systems
Infobox
Is a
Patent jurisdiction
Patent number
07401664
Date of patent
July 22, 2008
Patent application number
11414512
Date Filed
April 28, 2006
Patent primary examiner
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