Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861186 | Covering for an opening with a cover or grating placed in a frame | — | 1989-08-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861186 | Covering for an opening with a cover or grating placed in a frame | — | 1989-08-29 |