Donald Elwin McDowell

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Millsap, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Expandable centralizer for expandable pipe string
- Patent number 8,770,280
- Issue date Jul 8, 2014
- Antelope Oil Tool & Mfg. Co., LLC
- Jean Buytaert
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expandable centralizer for expandable pipe string
- Patent number 8,196,654
- Issue date Jun 12, 2012
- Frank's International, Inc.
- Jean Buytaert
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expandable centralizer for expandable pipe string
- Patent number 7,878,241
- Issue date Feb 1, 2011
- Frank's International, Inc.
- Jean Buytaert
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
EXPANDABLE CENTRALIZER FOR EXPANDABLE PIPE STRING
- Publication number 20120227959
- Publication date Sep 13, 2012
- Frank's International, Inc.
- Jean Buytaert
- E21 - EARTH DRILLING MINING
Information Patent Application
Expandable Centralizer For Expandable Pipe String
- Publication number 20110186289
- Publication date Aug 4, 2011
- Frank's International, Inc.
- Jean Buytaert
- E21 - EARTH DRILLING MINING
Information Patent Application
Expandable Centralizer For Expandable Pipe String
- Publication number 20080283253
- Publication date Nov 20, 2008
- Frank's International, Inc.
- Jean Buytaert
- E21 - EARTH DRILLING MINING