Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877571 | Process for deep drawing composite thermoplastic foil with a PVDC layer | — | 1989-10-31 |
| 4851179 | Method of operating a fleece-making apparatus | — | 1989-07-25 |
| 4820459 | Process for making spun-filament fleece from endless synthetic resin filament | — | 1989-04-11 |
| 4811418 | Method for the manufacture of plastic bags with welded side seams | — | 1989-03-07 |
| 4797083 | Extrusion die for making a foamed thermoplastic web | — | 1989-01-10 |