US Patent 7163363 Perforating drill
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Patent Inventor Names
Francois Defougeres0
Pierre Rigolet0
Sylvain Lamy0
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Patent abstract
The invention concerns a drill including a generally cylindrical body, tipped with a head and provided, over at least part of its length, generally spiral evaporating grooves. The groove(s) are delimited, over at least part of their length, by a succession of facets, attached to one another, and linked to one another by sharp edges or by radius blends.
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US Patent 07163363 Perforating drill US Patent 7163363 Perforating drill
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Patent Number
071633630
Patent Number
71633630
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Patent Jurisdiction
Patent Number
071633630
Date of Patent
January 16, 2007
0Patent Application Number
102753700
Date Filed
April 26, 2001
0Official Website
Patent Primary Examiner
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US Patent 07163363 Perforating drill
Infobox
Is a
Patent jurisdiction
Patent number
07163363
Date of patent
January 16, 2007
Patent application number
10275370
Date Filed
April 26, 2001
Patent primary examiner
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