Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802308 | Means for preventing air leakage through window sash interlock | — | 1989-02-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4802308 | Means for preventing air leakage through window sash interlock | — | 1989-02-07 |