Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D769769 | Round gemstone | Hertz Hasenfeld | 2016-10-25 |
| 9265311 | Cushion cut gemstone with excellent optical brilliance | Hertz Hasenfeld | 2016-02-23 |
| D727783 | Gemstone | Hertz Hasenfeld | 2015-04-28 |
| D722522 | Gem crown | Hertz Hasenfeld | 2015-02-17 |