Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4618993 | Valve bag | — | 1986-10-21 |
| 4540396 | Apparatus for folding paper sacks to Z shape | — | 1985-09-10 |
| 4394207 | Apparatus for sealing the valve in a valve bag | Christian Hejlesen | 1983-07-19 |
| 4338084 | Method for piling or stacking sacks or bags | — | 1982-07-06 |