Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| H1250 | Modification of asphalt | Dennis W. Gilmore, Richard Gelles, James H. Collins, Mark A. Berggren, Mark G. Bouldin | 1993-11-02 |
AS
Anne R. Spell
Overall (All Time): #3,836,843 of 4,157,543Top 95%
1
Patents All Time