Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594802 | Sound system for use with gas fireplaces and simulating burning wood | Jan S. Berghoff | 1997-01-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594802 | Sound system for use with gas fireplaces and simulating burning wood | Jan S. Berghoff | 1997-01-14 |