Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4349494 | Method of making a fire-retardant product having a foamed lore and a fire-retardant protective layer | — | 1982-09-14 |
| 4314034 | Polyurea polyurethane foamed sponge with high wet strength | Conrad Vollmerhausen | 1982-02-02 |