Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881522 | Method for activating the combustion in a heating apparatus using solid fuel, and chimney for implementing such method | — | 1989-11-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881522 | Method for activating the combustion in a heating apparatus using solid fuel, and chimney for implementing such method | — | 1989-11-21 |