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Daniel Johnson
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Buenos Aires, AR
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Patents Grants
last 30 patents
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Patent Grant
Assembly of hollow torque transmitting sucker rods and sealing nipp...
Patent number
6,991,267
Issue date
Jan 31, 2006
Siderca S.A.I.C.
Hugo A. Ernst
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Assembly of hollow torque transmitting sucker rods
Patent number
6,764,108
Issue date
Jul 20, 2004
Siderca S.A.I.C.
Hugo A. Ernst
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
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Patent Application
Assembly of hollow torque transmitting sucker rods and sealing nipp...
Publication number
20040113427
Publication date
Jun 17, 2004
Hugo A. Ernst
E21 - EARTH DRILLING MINING
Information
Patent Application
Assembly of hollow torque transmitting sucker rods
Publication number
20030085570
Publication date
May 8, 2003
SIDERCA S.A.I.C.
Hugo A. Ernst
E21 - EARTH DRILLING MINING