Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6225128 | Color test card package for testing for the presence of lead | — | 2001-05-01 |
| 4373588 | Fire extinguishing apparatus | Harold F. Roberts | 1983-02-15 |
| 4280126 | Liquid level detector | — | 1981-07-21 |