Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5308859 | Composition for preservation of wood and wood-based materials | Rainer Gruening | 1994-05-03 |
| 5303502 | Method and article for the preventive protection of materials against soil-dwelling pests | Michael Pallaske, Hans-Werner Wegen | 1994-04-19 |