Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12187394 | Watercraft lift system and method | David Alan Kellogg | 2025-01-07 |
| 11447217 | Watercraft lift system and method | David Alan Kellogg | 2022-09-20 |
| 10336415 | Watercraft lift system and method | David Alan Kellogg | 2019-07-02 |
| 8746231 | Range exhaust cleaning system and method | David Alan Kellogg, David Paul Smieja | 2014-06-10 |
| 8316839 | Range exhaust cleaning system and method | David Alan Kellogg, David Paul Smieja | 2012-11-27 |
| 7832391 | Range exhaust cleaning system | David Alan Kellogg, David Paul Smieja | 2010-11-16 |