Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866905 | Method of installing a mineral fibre material provided in roll form, a mineral fibre strip suitable for carrying out the method and a method of producing the mineral fibre strip | Jürgen Royar, Frank Ruechel, Reinhard Stoyke | 1989-09-19 |