Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347502 | Early warning electrical sound alarm system for pet door structure | David Holmes | 1982-08-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4347502 | Early warning electrical sound alarm system for pet door structure | David Holmes | 1982-08-31 |