Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9816529 | Propeller sound field modification systems and methods | Gary H. Koopman | 2017-11-14 |
| 9394045 | Propeller sound field modification systems and methods | Gary H. Koopmann | 2016-07-19 |
| 8622230 | Resealable container having frangible portion and hinged top | — | 2014-01-07 |
| 8215513 | Self-closing resealable can end | — | 2012-07-10 |
| 6129947 | Powder duster | — | 2000-10-10 |
| 5165636 | Stabilizing support terminus | — | 1992-11-24 |