Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426463 | Fire-protection sleeve for pipes, cables and the like | Herbert Munzenberger, Arndt Andresen | 2002-07-30 |
| 6314692 | Lead-in system for ceilings and walls including trapezoidally corrugated sheet metal framework | Herbert Munzenberger, Arndt Andresen | 2001-11-13 |
| 6161873 | Masonry lead-in fixture | Herbert Munzenberger, Arndt Andresen | 2000-12-19 |