Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4280536 | Connecting device for insulated duct work | — | 1981-07-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4280536 | Connecting device for insulated duct work | — | 1981-07-28 |