Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404955 | Fireplace heat extractor | Floyd R. Clark, Lothar K. Will | 1983-09-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4404955 | Fireplace heat extractor | Floyd R. Clark, Lothar K. Will | 1983-09-20 |