Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404879 | Accurately placed stress concentrating aperture in flexible packages | David E. Enting | 1983-09-20 |
| 4332327 | Accurately placed stress concentrating aperture in flexible packages | David E. Enting | 1982-06-01 |