Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10627146 | Liquid slugging detection and protection | Frank S. Wallis, Randall Knick, Richard Miu | 2020-04-21 |
| 10280918 | Reciprocating compressor with vapor injection system | Ernest R. Bergman, John P. Elson, Frank S. Wallis, Anthony L. Erb, Thomas L. Girvin, II +3 more | 2019-05-07 |