Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090766 | Stone cleaning agent and preparation thereof | — | 2000-07-18 |
| 4897213 | Granite cleaning agent and preparation thereof | — | 1990-01-30 |
| 4715633 | Cup holder | John MacConnell | 1987-12-29 |