Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12138496 | Personal protective equipment face coverings with inherently ionic material | Kenneth L. Hoffman, Sandra S. Bodek, Sharon Hoffman | 2024-11-12 |
| 4958657 | Gas supply safety device | Thomas Hagan | 1990-09-25 |
| 4295494 | Method and apparatus for plugging and cutting a gas line or the like without excavation | John Olin Trimble | 1981-10-20 |