Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842791 | Extrusion apparatus and process for production of multilayer film containing an inner barrier layer | Robert A. Luecke | 1989-06-27 |
| 4804510 | Filtering system for use in coextrusion apparatus and method of use | Robert A. Luecke, Paul CURTIN | 1989-02-14 |