Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5506037 | Heat-reflecting and/or electrically heatable laminated glass pane | — | 1996-04-09 |
| 5271994 | Electrically heatable automobile glazing of laminated glass | — | 1993-12-21 |
| 4332241 | Solar energy collector panel | Rolf Dalstein, Johann Spies, Hans-Dieter Greif, Jurgen Unbescheid, Hans-Werner Nowoczyn | 1982-06-01 |