Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5017825 | Filter for colored electric lamp | Godefridus H. C. Heijnen, Cornelis Mulder | 1991-05-21 |
ES
Ernest O. W. Van Der Stelt
Overall (All Time): #3,876,934 of 4,157,543Top 95%
1
Patents All Time