Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290138 | Combined loose-leaf notebook with calculator pouch | — | 1987-06-02 |
| 4236477 | Boat hull cleaning device | Bertle Spence | 1980-12-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D290138 | Combined loose-leaf notebook with calculator pouch | — | 1987-06-02 |
| 4236477 | Boat hull cleaning device | Bertle Spence | 1980-12-02 |