Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5121997 | Perforated tear strip for easy-open flexible containers | Daniel Lee Beyer, Daniel P. McDonald | 1992-06-16 |
| 5100246 | Pull bead and guide rails for easy open flexible containers | Daniel P. McDonald | 1992-03-31 |