Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11173438 | Filter having tracer material | Javier A. Rodriguez, Philip Carl Spengler, Darrell Lee Morehouse, III | 2021-11-16 |
| 11110378 | Sensing system for detecting machine fluid degradation | Philip Carl Spengler, Jeffrey R. Ries | 2021-09-07 |