Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5564243 | Insulative wall cladding having insulation boards fitting together to form channels and fire-retardant panels disposed therein | Richard E. Kroll, Frederick M. Hansen | 1996-10-15 |
| 5392578 | Insulative wall cladding having insulation boards fitting together to form channels and fire-retardant panels disposed therein | Richard E. Kroll, Frederick M. Hansen | 1995-02-28 |
| 5363621 | Insulative wall cladding having insulation boards fitting together to form channels | Richard E. Kroll, Frederick M. Hansen | 1994-11-15 |