Stewart; Andrew D. G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stewart; Andrew D. G..The latest application filed is for "making an elongate cut using high energy radiation".
- Stewart; Andrew D. G. - Reading GB2
- Stewart; Andrew D. G. - Ashampstead Reading GB2
- Stewart; Andrew D. G. - Cambridge EN
| Patent | Date |
|---|---|
| Making an elongate cut using high energy radiation Grant 5,248,877 - Cooper , et al. September 28, 1 | 1993-09-28 |
| Sensing a narrow frequency band of radiation and gemstones Grant 5,206,699 - Stewart , et al. April 27, 1 | 1993-04-27 |
| LVDT displacement sensor with signal noise reduction for use in weighing apparatus Grant 4,916,391 - Doerman , et al. April 10, 1 | 1990-04-10 |
| Weighing a number of objects in succession Grant 4,696,358 - Doerman , et al. September 29, 1 | 1987-09-29 |
| Integrating sphere arrangement for producing size-corrected color signals Grant 4,645,922 - Welbourn , et al. February 24, 1 | 1987-02-24 |
| Examining a gemstone Grant 4,529,305 - Welford , et al. July 16, 1 | 1985-07-16 |
| Centering and working gemstones Grant 4,417,564 - Lawrence , et al. November 29, 1 | 1983-11-29 |
| Electron Probe Employing Three Secondary Emission Detectors Whose Outputs Are Combined To Minimize Error Grant 3,597,607 - Campbell , et al. August 3, 1 | 1971-08-03 |
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