Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9630445 | Wipeable writing surface | — | 2017-04-25 |
| 9352607 | Wipeable writing surface | — | 2016-05-31 |
| RE44673 | Portable presentation and display boards | — | 2013-12-31 |
| 7823309 | Portable presentation and display boards | — | 2010-11-02 |
| 6796086 | Safety device for hinged doors | — | 2004-09-28 |
| 5612932 | Watch and timepiece attaching device | — | 1997-03-18 |
| 5001862 | Safety attachment for hinged side of doors | — | 1991-03-26 |
| 4228597 | Teaching device | — | 1980-10-21 |