Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D857535 | Grip for a gem tester | Daniel L. Kessler | 2019-08-27 |
| 10352868 | Grading lamp for gemstones | Daniel L. Kessler | 2019-07-16 |
| D823368 | Magnifying device | Daniel L. Kessler | 2018-07-17 |
| 10001466 | Magnifying device for jewelry and system for use of same | Daniel L. Kessler | 2018-06-19 |
| D810368 | Jewelry cleaning applicator | Daniel L. Kessler | 2018-02-13 |
| D798172 | Grading lamp | Daniel L. Kessler | 2017-09-26 |
| D796749 | Ultrasonic cleaner | Daniel L. Kessler | 2017-09-05 |
| D771881 | Jewelry cleaner | Daniel L. Kessler | 2016-11-15 |
| 9395350 | Gem tester | Daniel L. Kessler | 2016-07-19 |
| 9285357 | Gem tester | Daniel L. Kessler | 2016-03-15 |
| 9134263 | Gem tester | Daniel L. Kessler | 2015-09-15 |
| D731328 | Desktop apparatus for testing precious metal | Daniel L. Kessler | 2015-06-09 |
| 8749253 | Gem tester | Daniel L. Kessler | 2014-06-10 |
| 8564316 | Gem tester | Daniel L. Kessler | 2013-10-22 |
| D643163 | Jewelry cleaner | Daniel L. Kessler | 2011-08-09 |
| D634271 | Charging stand for instruments for testing the authenticity of diamonds and moissanite | Daniel L. Kessler | 2011-03-15 |
| 6119864 | Storage device to accommodate batteries of varying sizes | Michael Zalta | 2000-09-19 |