Issued Patents 2005
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938441 | Method and apparatus for heat treatment of glass material and natural materials specifically of volcanic origin | Ji{hacek over (r)}i Draho{hacek over (s)}, Václay Volf, Jaroslav Vozáb | 2005-09-06 |