Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860239 | Correlator with variably normalized input signals | — | 1989-08-22 |
| 4818743 | Desulfurization catalyst and the catalyst prepared by a method | Howard D. Simpson, Ryden L. Richardson | 1989-04-04 |