Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4495156 | Primary system | — | 1985-01-22 |
| 4309237 | Apparatus for adhering a can opening key to a container | Harold C. Lemke | 1982-01-05 |
| 4233331 | Method of securing opener key to a container using oriented polypropylene film with solventless acrylic adhesive | Harold C. Lemke | 1980-11-11 |
| 4228221 | Primer system | — | 1980-10-14 |
| 4188437 | Thermotropic adhesive tape | — | 1980-02-12 |