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Threading insert with cooling channels
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Patent number 6,957,933
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Issue date Oct 25, 2005
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Siderca S.A.I.C.
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Nelson M. Pachao-Morbitzer
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Corrosion resistant sucker rods
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Patent number 6,737,174
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Issue date May 18, 2004
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YPF S.A.
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Gustavo Luis Bianchi
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Corrosion resistant sucker rods
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Patent number 6,723,384
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Issue date Apr 20, 2004
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YPF S.A.
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Gustavo Luis Bianchi
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C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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Tubular members
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Patent number 6,557,906
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Issue date May 6, 2003
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Siderca S.A.I.C.
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Gabriel Carcagno
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...