Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D801168 | Torsion spring to aid in keeping an interior door open | Robert Vavrinak | 2017-10-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D801168 | Torsion spring to aid in keeping an interior door open | Robert Vavrinak | 2017-10-31 |