Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11299878 | Vacuum sewage system with sump breather apparatus | John M. Grooms | 2022-04-12 |
| 10001787 | Controller for vacuum sewage system | John M. Grooms | 2018-06-19 |
| 9523449 | Pipe coupling | John M. Grooms | 2016-12-20 |
| 5446617 | Ballast circuit enclosure and grounding structure | Daniel P. O'Brien | 1995-08-29 |