Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5515554 | Vacuum toilet system | John M. Grooms | 1996-05-14 |
| 5326069 | Vacuum toilet system and discharge valve thereof | John M. Grooms | 1994-07-05 |
| 5282281 | Portable vacuum toilet system | John M. Grooms, Blake V. Ricks | 1994-02-01 |