Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4400228 | Method of making lengths of flexible insulated air duct with end collars | — | 1983-08-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4400228 | Method of making lengths of flexible insulated air duct with end collars | — | 1983-08-23 |