Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5970942 | Electronically controlled continuous lubricating oil replacement system | David E. Koeberlein, Paul D. Cantrell, John P. Graham, Jerry C. Wang, Leslie A. Roettgen +4 more | 1999-10-26 |