Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797136 | Low rank coal by wet oxidizing, drying and cooling | Mark A. Siddoway, William C. Machmer | 1989-01-10 |
NS
Neal D. Stidham
Overall (1989): #135,600 of 140,708Top 100%
1
Patents 1989