Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6137891 | Variable geometry electromagnetic transducer | Karen Pamela Orell-Porrazzo | 2000-10-24 |
| 5953438 | Planar electromagnetic transducer | Charles F. Stevenson | 1999-09-14 |
| 5872855 | Multiple voice coil, multiple function loudspeaker | Karen Pamela Orell-Porrazzo | 1999-02-16 |
| 5837197 | Positive fertility testing and reproductive health system | Karen Pamela Orell Porrazzo | 1998-11-17 |
| D389587 | Slide device for testing and displaying fertility determinations | Karen P. Orell Porrazzo | 1998-01-20 |
| 5627903 | Variable geometry electromagnetic transducer | Karen Pamela Orell-Porrazzo | 1997-05-06 |
| 5430805 | Planar electromagnetic transducer | Charles F. Stevenson | 1995-07-04 |