Spears; David L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Spears; David L..The latest application filed is for "method and apparatus for detecting and discriminating particles in a fluid".
- Spears; David L. - Acton MA
| Patent | Date |
|---|---|
| Method and apparatus for detecting and discriminating particles in a fluid Grant 7,920,261 - Jeys , et al. April 5, 2 | 2011-04-05 |
| Method And Apparatus For Detecting And Discriminating Particles In A Fluid App 20100053614 - Jeys; Thomas H. ; et al. | 2010-03-04 |
| Superlattice structures for use in thermoelectric devices Grant 6,452,206 - Harman , et al. September 17, 2 | 2002-09-17 |
| Infrared detector using a resonant optical cavity for enhanced absorption Grant 5,455,421 - Spears October 3, 1 | 1995-10-03 |
| Soft X-ray Mask Alignment System Grant 3,742,229 - Smith , et al. June 26, 1 | 1973-06-26 |
| Soft X-ray Mask Support Substrate Grant 3,742,230 - Spears , et al. June 26, 1 | 1973-06-26 |
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