Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675311 | Frequency sweeping audio signal device | Robert L. Leonard, Jr. | 1997-10-07 |
| 5675312 | Piezoelectric warbler | — | 1997-10-07 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5675311 | Frequency sweeping audio signal device | Robert L. Leonard, Jr. | 1997-10-07 |
| 5675312 | Piezoelectric warbler | — | 1997-10-07 |