Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5277842 | Solvents for agents to mass deacidify books and other paper products in an environmentally safe manner | Peter Schwerdt, Rolf Eggersdorfer | 1994-01-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5277842 | Solvents for agents to mass deacidify books and other paper products in an environmentally safe manner | Peter Schwerdt, Rolf Eggersdorfer | 1994-01-11 |