Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10288184 | Metal reinforced seal plate for pilot actuated spool valve | Robert E. Smith, III, Frank Harold Hollister, Richard R. Watson | 2019-05-14 |
| 10247322 | Metal reinforced seal plate for pilot actuated spool valve | Robert E. Smith, III, Frank Harold Hollister, Richard R. Watson | 2019-04-02 |
| 9822895 | Metal reinforced seal plate for pilot actuated spool valve | Robert E. Smith, III, Frank Harold Hollister, Richard R. Watson | 2017-11-21 |