Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5148941 | Powder drum | — | 1992-09-22 |
| 4674520 | Powder drum | James Gretshel | 1987-06-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5148941 | Powder drum | — | 1992-09-22 |
| 4674520 | Powder drum | James Gretshel | 1987-06-23 |