Van Drentham-Susman; Hector Filippus Alexander
Patent Applications and Registrations
Patent applications and USPTO patent grants for Van Drentham-Susman; Hector Filippus Alexander.The latest application filed is for "expandable downhole tool".
- Van Drentham-Susman; Hector Filippus Alexander - Inverurie GB
- Van Drentham Susman, Hector Filippus Alexander - Scotland GB
| Patent | Date |
|---|---|
| Thrust bearing for down-hole tool Grant 7,104,698 - Van Drentham-Susman September 12, 2 | 2006-09-12 |
| Propulsion apparatus Grant 6,837,759 - Van-Drentham Susman January 4, 2 | 2005-01-04 |
| Expandable downhole tool App 20040112587 - Van Drentham Susman, Hector Filippus Alexander ; et al. | 2004-06-17 |
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