Alan J. Marshall

Person

Lost Creek, WV, US

People

Patents Grantslast 30 patents

Information Patent Grant
Percussion drilling assembly and hammer bit with gage and outer row...
- Patent number 9,605,485
- Issue date Mar 28, 2017
- Smith International, Inc.
- Shantanu Swadi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drilling assembly and hammer bit with gage and outer row...
- Patent number 8,763,729
- Issue date Jul 1, 2014
- Smith International, Inc.
- Shantanu Swadi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drilling assembly and locking system therefor
- Patent number 8,657,040
- Issue date Feb 25, 2014
- Smith International, Inc.
- Alan Jackson Marshall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drilling assembly and hammer bit with gage and outer row...
- Patent number 8,387,725
- Issue date Mar 5, 2013
- Smith International, Inc.
- Shantanu Swadi
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drilling assembly with annular locking member
- Patent number 8,312,613
- Issue date Nov 20, 2012
- Smith International, Inc.
- Alan J. Marshall
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Percussion hammer bit with a driver sub including a guide sleeve po...
- Patent number 8,312,944
- Issue date Nov 20, 2012
- Smith International, Inc.
- Alan J. Marshall
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Percussion drilling assembly having erosion retarding casing
- Patent number 8,061,450
- Issue date Nov 22, 2011
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Grant
Percussion drilling assembly with annular locking member
- Patent number 7,997,346
- Issue date Aug 16, 2011
- Smith International, Inc.
- Alan J. Marshall
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Percussion bit drill drive collar with retention mechanism and meth...
- Patent number 7,428,938
- Issue date Sep 30, 2008
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
PERCUSSION HAMMER BIT
- Publication number 20160153236
- Publication date Jun 2, 2016
- Alan J. MARSHALL
- E21 - EARTH DRILLING MINING
Information Patent Application
PERCUSSION DRILLING ASSEMBLY AND HAMMER BIT WITH GAGE AND OUTER ROW...
- Publication number 20130175096
- Publication date Jul 11, 2013
- Smith International, Inc.
- Shantanu Swadi
- E21 - EARTH DRILLING MINING
Information Patent Application
PERCUSSION DRILLING ASSEMBLY WITH ANNULAR LOCKING MEMBER
- Publication number 20110258836
- Publication date Oct 27, 2011
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion Drilling Assembly and Locking System Therefor
- Publication number 20100236835
- Publication date Sep 23, 2010
- Smith International, Inc.
- Alan Jackson Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion Hammer Bit With a Driver Sub Including a Guide Sleeve Po...
- Publication number 20100187016
- Publication date Jul 29, 2010
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion Drilling Assembly With Annular Locking Member
- Publication number 20100139979
- Publication date Jun 10, 2010
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion Drilling Assembly Having Erosion Retarding Casing
- Publication number 20100044111
- Publication date Feb 25, 2010
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion Drilling Assembly and Hammer Bit with Gage and Outer Row...
- Publication number 20090255735
- Publication date Oct 15, 2009
- Smith International, Inc.
- Shantanu Swadi
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion bit drill drive collar with retention mechanism
- Publication number 20070261885
- Publication date Nov 15, 2007
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING
Information Patent Application
Percussion drill bit with V-shaped splines
- Publication number 20070137895
- Publication date Jun 21, 2007
- Smith International, Inc.
- Alan J. Marshall
- E21 - EARTH DRILLING MINING

Alan J. Marshall

Person

Patents Grantslast 30 patents

Percussion drilling assembly and hammer bit with gage and outer row...

Percussion drilling assembly and hammer bit with gage and outer row...

Percussion drilling assembly and locking system therefor

Percussion drilling assembly and hammer bit with gage and outer row...

Percussion drilling assembly with annular locking member

Percussion hammer bit with a driver sub including a guide sleeve po...

Percussion drilling assembly having erosion retarding casing

Percussion drilling assembly with annular locking member

Percussion bit drill drive collar with retention mechanism and meth...

Patents Applicationslast 30 patents

PERCUSSION HAMMER BIT

PERCUSSION DRILLING ASSEMBLY AND HAMMER BIT WITH GAGE AND OUTER ROW...

PERCUSSION DRILLING ASSEMBLY WITH ANNULAR LOCKING MEMBER

Percussion Drilling Assembly and Locking System Therefor

Percussion Hammer Bit With a Driver Sub Including a Guide Sleeve Po...

Percussion Drilling Assembly With Annular Locking Member

Percussion Drilling Assembly Having Erosion Retarding Casing

Percussion Drilling Assembly and Hammer Bit with Gage and Outer Row...

Percussion bit drill drive collar with retention mechanism

Percussion drill bit with V-shaped splines