Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D956937 | Pipe coupling assembly | Donald James DeWitt | 2022-07-05 |
| 11193611 | Pipe coupling apparatus | Donald James DeWitt | 2021-12-07 |
| 8572768 | Urinal seal and method of installation | Donald James DeWitt | 2013-11-05 |
| D655796 | Urinal seal | Donald James DeWitt | 2012-03-13 |
| D655795 | Urinal seal | Donald James DeWitt | 2012-03-13 |
| D655400 | Urinal seal | Donald James DeWitt | 2012-03-06 |
| D649625 | Urinal seal | Donald James DeWitt | 2011-11-29 |