Sperry-Sun Drilling Services, Inc.

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Organization

Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and system for the early detection of the jamming of a core...
- Patent number 5,417,295
- Issue date May 23, 1995
- Sperry Sun Drilling Services, Inc.
- M. Vikram Rao
- E21 - EARTH DRILLING MINING

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Trademarklast 30 trademarks

Information Trademark
74164607 - SURWEL
- Serial number 74164607
- Registration number 1698862
- Filing date Apr 1, 1991
- Sperry-Sun Drilling Services, Inc.
- 9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments