Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689356 | Polyurethane elastomers prepared in a two-step process using mixtures of chain extenders | Richard D. Peffley, James A. Vanderhider | 1987-08-25 |
JS
John H. Spells
Overall (All Time): #3,980,856 of 4,157,543Top 100%
1
Patents All Time