Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12259080 | Pipe thread protector with removable end member and interference-fit protrusion | John Danneffel | 2025-03-25 |
| D1025308 | Pipe thread protector | John Danneffel | 2024-04-30 |
| 11774029 | Open-ended pipe thread protector with seal thereon and seal therefor | John Danneffel | 2023-10-03 |
| 10274123 | Pipe thread protector with an inner tapered groove | John Danneffel | 2019-04-30 |
| 9828150 | Pipe thread protector with an inner tapered groove | John Danneffel | 2017-11-28 |