Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11724067 | Eversible catheter with minimal rubbing friction | — | 2023-08-15 |
| 10156104 | Centralizer with collaborative spring force | — | 2018-12-18 |
| 9909372 | Well casing stop collar | — | 2018-03-06 |
| 9725967 | Centralizers for centralizing well casings | David Duckworth | 2017-08-08 |
| 9626091 | Centralizers for centralizing well casings | David Duckworth | 2017-04-18 |
| 9458672 | Method and devices for centralizing a casing | — | 2016-10-04 |
| 9371988 | Candle assembly with retracting non-combustible wick | — | 2016-06-21 |
| 9341032 | Centralizer with collaborative spring force | — | 2016-05-17 |
| 9085930 | Device for carrier protection | Richard Francis Steiner, Donald William Steiner | 2015-07-21 |
| 5033949 | Hole repair apparatus | — | 1991-07-23 |