Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11000757 | Method of weighting chess pieces | — | 2021-05-11 |
| 10226688 | Chess pieces weighted with powdered metal | — | 2019-03-12 |
| 5420830 | Chess clock | William Goichberg | 1995-05-30 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11000757 | Method of weighting chess pieces | — | 2021-05-11 |
| 10226688 | Chess pieces weighted with powdered metal | — | 2019-03-12 |
| 5420830 | Chess clock | William Goichberg | 1995-05-30 |