Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4550602 | Liquid level marker for container | William Burke, Elwood Marple | 1985-11-05 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4550602 | Liquid level marker for container | William Burke, Elwood Marple | 1985-11-05 |