Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5924586 | Plastic closure with compression molded liner | James L. Gregory, Dennis J. Burzynski, Frank L. Sprowl | 1999-07-20 |
| 5650113 | Method of making plastic beverage closure | James L. Gregory, Dennis J. Burzynski, Frank L. Sprowl | 1997-07-22 |
| 5462187 | Plastic beverage closure | James L. Gregory, Dennis J. Burzynski, Frank L. Sprowl | 1995-10-31 |
| 5265747 | Plastic beverage closure | James L. Gregory, Dennis J. Burzynski, Frank L. Sprowl | 1993-11-30 |
| 4749095 | Tamper-indicating closure and package | — | 1988-06-07 |