Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5760367 | Apparatus and method of engraving indicia on gemstones, and gemstones, produced thereby | Joel M. Rosenwasser, Todd Knichel | 1998-06-02 |
| 5753887 | Apparatus for laser engraving indicia on gemstones | Joel M. Rosenwasser, Todd Knichel | 1998-05-19 |
| 5572887 | Magnetic jewelry chain closure | — | 1996-11-12 |