Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10280702 | Multistage high pressure fracturing system with counting system | Robert Graf | 2019-05-07 |
| 10221648 | Multistage high pressure fracturing system with counting system | Robert Graf | 2019-03-05 |