| 11745452 |
Modular production line for the production of ophthalmic lenses |
Roger Biel, Karin Stoller, Burkhard Dietrich, Jens Hof |
2023-09-05 |
| 11499888 |
Lens inspection module |
Bernhard Pfaff, Roger Biel, Susanne Fechner |
2022-11-15 |
| 11215844 |
Modular production line for the production of ophthalmic lenses |
Roger Biel, Karin Stoller, Burkhard Dietrich, Jens Hof |
2022-01-04 |
| 10591747 |
Contact lens inspection method and system |
Steffen Paulekuhn, Susanne Fechner, Sarah Unterkofler, Evgeni Schumm, Matthias Schwab |
2020-03-17 |
| D857535 |
Grip for a gem tester |
Henry M. Kessler |
2019-08-27 |
| 10352868 |
Grading lamp for gemstones |
Henry M. Kessler |
2019-07-16 |
| D823368 |
Magnifying device |
Henry M. Kessler |
2018-07-17 |
| 10001466 |
Magnifying device for jewelry and system for use of same |
Henry M. Kessler |
2018-06-19 |
| D810368 |
Jewelry cleaning applicator |
Henry M. Kessler |
2018-02-13 |
| 9874491 |
Cuvette system and methods for the inspection of ophthalmic lenses |
Susanne Fechner, Roger Biel, Michael Stutz |
2018-01-23 |
| D798172 |
Grading lamp |
Henry M. Kessler |
2017-09-26 |
| D796749 |
Ultrasonic cleaner |
Henry M. Kessler |
2017-09-05 |
| D771881 |
Jewelry cleaner |
Henry M. Kessler |
2016-11-15 |
| 9395350 |
Gem tester |
Henry M. Kessler |
2016-07-19 |
| 9285357 |
Gem tester |
Henry M. Kessler |
2016-03-15 |
| 9134263 |
Gem tester |
Henry M. Kessler |
2015-09-15 |
| D731328 |
Desktop apparatus for testing precious metal |
Henry M. Kessler |
2015-06-09 |
| 8749253 |
Gem tester |
Henry M. Kessler |
2014-06-10 |
| 8564316 |
Gem tester |
Henry M. Kessler |
2013-10-22 |
| D643163 |
Jewelry cleaner |
Henry M. Kessler |
2011-08-09 |
| D634271 |
Charging stand for instruments for testing the authenticity of diamonds and moissanite |
Henry M. Kessler |
2011-03-15 |