Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9388716 | Systems and methods for accurately compensating for a change in amount of unwanted fluid diluted in engine oil resulting from a recent long trip | Eric W. Schneider, Daniel Hicks Blossfeld, Matthew J. Snider, Eric R. Johnson | 2016-07-12 |
| 4847768 | Automatic engine oil change indicator system | Ellen S. Schwartz, John D. Keersmaekers, Christine M. Traylor, Gary J. Wallo | 1989-07-11 |
| 4742476 | Automatic engine oil change indicator system | Ellen S. Schwartz, Ann J. Wisehart, Trieu Nguyen | 1988-05-03 |