Crossfield; Michael David
Patent Applications and Registrations
Patent applications and USPTO patent grants for Crossfield; Michael David.The latest application filed is for "magnetic tags or markers".
- Crossfield; Michael David - West Wickham GB
- Crossfield; Michael David - Cambridge GB
| Patent | Date |
|---|---|
| Magnetic tags or markers Grant 6,371,379 - Dames , et al. April 16, 2 | 2002-04-16 |
| Magnetic reading devices Grant 6,230,972 - Dames , et al. May 15, 2 | 2001-05-15 |
| Multi-layer magnetic tag Grant 6,204,766 - Crossfield , et al. March 20, 2 | 2001-03-20 |
| Surgical devices and their location Grant 6,076,007 - England , et al. June 13, 2 | 2000-06-13 |
| Magnetic markers Grant 6,054,924 - Dames , et al. April 25, 2 | 2000-04-25 |
| Methods for coding magnetic tags Grant 5,965,214 - Crossfield , et al. October 12, 1 | 1999-10-12 |
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