Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5616829 | Abnormality detection/suppression system for a valve apparatus | Masatsugu Fujio, Keiichiro Hayashi, Masatoshi Okano, David E. Thrall | 1997-04-01 |
| 5090239 | Strain sensing valve | David E. Thrall | 1992-02-25 |