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TDW Delaware, Inc.
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Tulsa, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Device for plugging the interior of a pipe
Patent number
5,531,250
Issue date
Jul 2, 1996
TDW Delaware, Inc.
Eric N. Freeman
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pipeline bend detector pig
Patent number
5,205,048
Issue date
Apr 27, 1993
TDW Delaware, Inc.
Danny D. Toomey
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pipeline caliper pig
Patent number
5,088,336
Issue date
Feb 18, 1992
TDW Delaware, Inc.
Jeffrey S. Rosenberg
G01 - MEASURING TESTING
Information
Patent Grant
Bend detector pig
Patent number
4,930,223
Issue date
Jun 5, 1990
TDW Delaware, Inc.
Dennis R. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Cleaning pig with selectable debris flushing action
Patent number
4,825,498
Issue date
May 2, 1989
TDW Delaware, Inc.
William J. Rankin
B08 - CLEANING
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last 30 patents
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