Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9878507 | Retroflective sheeting | Kenneth L. Smith, James R. Imbertson, John C. Kelliher, John A. Worrell | 2018-01-30 |
SE
Sidney A. Ellingstad
Overall (2018): #236,255 of 503,207Top 50%
1
Patents 2018