Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4227398 | Piezoelectric gum measurement device | Mary H. Keirns | 1980-10-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4227398 | Piezoelectric gum measurement device | Mary H. Keirns | 1980-10-14 |