Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4684043 | Shipping seal for viscous product dispenser | Donald D. Foster | 1987-08-04 |
| 4598843 | Take-up piston shipping lock for viscous product dispensers | Donald D. Foster, David Moore, Phil Nelson | 1986-07-08 |
| 4384660 | Tamper-proof clip for uplocking plungers of pump dispensers | John J. Palmisano, Donald D. Foster | 1983-05-24 |
| 4197954 | Container | Eugene W. Oltman | 1980-04-15 |