Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868448 | Piezoelectric relay switching matrix | — | 1989-09-19 |
| 4819126 | Piezoelectic relay module to be utilized in an appliance or the like | John D. Harnden, Jr. | 1989-04-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868448 | Piezoelectric relay switching matrix | — | 1989-09-19 |
| 4819126 | Piezoelectic relay module to be utilized in an appliance or the like | John D. Harnden, Jr. | 1989-04-04 |