Downs; Michael J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Downs; Michael J..The latest application filed is for "interactive learning system".
- Downs; Michael J. - La Jolla CA
- Downs; Michael J. - Headley Down Hampshire GB2
Trademarks
| Patent | Date |
|---|---|
| Interactive learning system Grant 6,086,381 - Downs , et al. July 11, 2 | 2000-07-11 |
| Apparatus and method for investigation of a surface Grant 4,576,479 - Downs March 18, 1 | 1986-03-18 |
| Apparatus and method for measuring refractive index Grant 4,571,082 - Downs February 18, 1 | 1986-02-18 |
| Surface profile interferometer Grant 4,534,649 - Downs August 13, 1 | 1985-08-13 |
| Interferometer systems Grant 4,360,271 - Downs , et al. November 23, 1 | 1982-11-23 |
| SEC | 0001803944 | Downs Michael J |
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