Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6513595 | Port collar assembly for use in a wellbore | Roland Richard Freiheit, James F. Wilkin | 2003-02-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6513595 | Port collar assembly for use in a wellbore | Roland Richard Freiheit, James F. Wilkin | 2003-02-04 |