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Roger Didericksen
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Ponca City, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Dual-seal drill bit pressure communication system
Patent number
6,695,079
Issue date
Feb 24, 2004
Smith International, Inc.
Gary Ray Portwood
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Dual-seal drill bit pressure communication system
Patent number
6,679,342
Issue date
Jan 20, 2004
Smith International, Inc.
Gary Ray Portwood
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Protected lubricant reservoir for sealed earth boring drill bit
Patent number
6,619,412
Issue date
Sep 16, 2003
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual-seal drill bit pressure communication system
Patent number
6,431,293
Issue date
Aug 13, 2002
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING
Information
Patent Grant
Sealed bearing roller cone bit having anti-plugging device
Patent number
6,408,957
Issue date
Jun 25, 2002
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Protected lubricant reservoir for sealed bearing earth boring drill...
Patent number
6,296,067
Issue date
Oct 2, 2001
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual-seal drill bit with fluid cleaning capability
Patent number
6,264,367
Issue date
Jul 24, 2001
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Sealed bearing drill bit with dual-seal configuration and fluid-cle...
Patent number
6,254,275
Issue date
Jul 3, 2001
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Protected lubricant reservoir with pressure control for sealed bear...
Patent number
6,206,110
Issue date
Mar 27, 2001
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Hardfacing rock bit cones for erosion protection
Patent number
6,196,338
Issue date
Mar 6, 2001
Smith International, Inc.
Robert Slaughter
E21 - EARTH DRILLING MINING
Information
Patent Grant
Dual-seal drill bit pressure communication system
Patent number
6,196,339
Issue date
Mar 6, 2001
Smith International, Inc.
Gary Ray Portwood
E21 - EARTH DRILLING MINING
Information
Patent Grant
Composite earth boring bit seal
Patent number
6,123,337
Issue date
Sep 26, 2000
Smith International, Inc.
Zhigang Fang
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rock drill bit with back-reaming protection
Patent number
6,116,357
Issue date
Sep 12, 2000
Smith International, Inc.
Robert Wagoner
E21 - EARTH DRILLING MINING
Information
Patent Grant
Sealed bearing drill bit with dual-seal configuration
Patent number
6,033,117
Issue date
Mar 7, 2000
Smith International, Inc.
Peter Cariveau
E21 - EARTH DRILLING MINING
Information
Patent Grant
Sealed bearing drill bit with dual-seal configuration and fluid-cle...
Patent number
5,887,981
Issue date
Mar 30, 1999
Smith International, Inc.
Robert H. Slaughter
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Dual-seal drill bit pressure communication system
Publication number
20030019666
Publication date
Jan 30, 2003
Smith International, Inc.
Gary Ray Portwood
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Dual-seal drill bit pressure communication system
Publication number
20020153172
Publication date
Oct 24, 2002
Gary Ray Portwood
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Protected lubricant reservoir for sealed earth boring drill bit
Publication number
20010050187
Publication date
Dec 13, 2001
Robert H. Slaughter
E21 - EARTH DRILLING MINING