Stevens; Roger A.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stevens; Roger A..The latest application filed is for "portable vehicle navigation system".
- Stevens; Roger A. - Lucas TX
| Patent | Date |
|---|---|
| Portable vehicle navigation system Grant 7,668,652 - Spencer , et al. February 23, 2 | 2010-02-23 |
| Portable Vehicle Navigation System App 20080027644 - Spencer; Larry ; et al. | 2008-01-31 |
| Portable vehicle navigation system Grant 7,295,921 - Spencer , et al. November 13, 2 | 2007-11-13 |
| Portable vehicle navigation system App 20040254722 - Spencer, Larry ; et al. | 2004-12-16 |
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