Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5150753 | Gravel pack screen having retention mesh support and fluid permeable particulate solids | John E. Gaidry, Joseph F. Donovan, Jefferson P. Ashton | 1992-09-29 |
| 5050678 | Gravel pack screen having retention means and fluid permeable particulate solids | John E. Gaidry, Joseph F. Donovan, Jefferson P. Ashton | 1991-09-24 |
| 4917183 | Gravel pack screen having retention mesh support and fluid permeable particulate solids | John E. Gaidry, Joseph F. Donovan, Jefferson P. Ashton | 1990-04-17 |