Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5542681 | Graphite packing | Wilbur Dean Hutchens, Frank E. Jensen | 1996-08-06 |
| 5299812 | Graphite packing | Ronald R. Brestel, Ronnald J. Funk, William C. Scheffert, Wilbur Dean Hutchens, Frank E. Jensen | 1994-04-05 |