Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D597125 | Fret for stringed instruments | Cheryl J. Rivera, Christina R. Rivera | 2009-07-28 |
| 7507888 | Fret and fingerboard for stringed instruments | Cheryl J. Rivera, Christina R. Rivera | 2009-03-24 |