Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4976002 | Tube particle vacuum cleaner | Mark Leonov | 1990-12-11 |
RG
Roy de Groot
Overall (All Time): #3,916,774 of 4,157,543Top 95%
1
Patents All Time