Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673947 | Device for butt joining of ducts for carrying gaseous medium and having a rectangular or square cross section | — | 1997-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673947 | Device for butt joining of ducts for carrying gaseous medium and having a rectangular or square cross section | — | 1997-10-07 |