Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6327719 | Portable restroom having molded base assembly with internal tank | Douglas E. Lobertmann, Daniel J. Koughan, Ronald J. Holmstadt, Todd Hilde | 2001-12-11 |
| D444570 | Portable restroom | Paul A. Pilosi, Darrin M. Swagel, Ronald J. Holmstadt, Daniel J. Koughan, Dean M. Carstens +2 more | 2001-07-03 |