Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6141923 | Fire-resistant frame structure for a facade or glass roof | Siegfried Habicht, Armin Tonsmann | 2000-11-07 |
| 5694731 | Fire resistant frame structure for windows, doors, facades or glass roofs | Armin Tonsmann, Siegfried Habicht, Eitel-Friedrich Hocker | 1997-12-09 |