Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850423 | Air preheater water jet cleaning apparatus | John Timothy Allen, Alan J. Pitts, Randall B. Cogbill | 1989-07-25 |
| 4850750 | Integrated blending control system | Randall B. Cogbill, Timothy James Dodd, Paul W. Heilman, Daryl L. Heronemus, Leslie R. Sears, III +7 more | 1989-07-25 |