Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5090584 | Multi-function cup lid | Clifford J. Roberts, John H. Kurz | 1992-02-25 | $18,746,000 |
| 4877391 | Apparatus for scoring rigid plastic sheet material | John H. Kurz | 1989-10-31 | |
| 4828137 | Plastic closure with score lines | John H. Kurz | 1989-05-09 | |
| 4818461 | Method for scoring rigid plastic sheet material | John H. Kurz | 1989-04-04 | |
| 4309929 | Trim press having hammer drive for punch | — | 1982-01-12 | |
| 4235579 | Synthetic plastics article manufacturing system | John H. Kurz | 1980-11-25 |