Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4604831 | Reduction of draughts through sliding sash windows | John M. H. Leighton | 1986-08-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4604831 | Reduction of draughts through sliding sash windows | John M. H. Leighton | 1986-08-12 |