Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4813212 | Method of fabricating dual compartment powder cartridge | John S. Cullen, James A. Vogt | 1989-03-21 |
| 4813791 | Bag with integral material treating packets | John S. Cullen | 1989-03-21 |