Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5452707 | Barbecue grill cart assembly | John Seal, Robert Johnston, Marvin R. Windham | 1995-09-26 |
| 4955358 | Barbecue grill cart assembly | John Seal, Robert Johnston, Marvin R. Windham | 1990-09-11 |
| 4429571 | Compound liquid flow meter | Donald J. Kullmann, William G. Karjalainen | 1984-02-07 |