Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5357251 | Electronic filters, signal conversion apparatus, hearing aids and methods | Robert E. Morley, Jr., A. Maynard Engebretson, George L. Engel | 1994-10-18 |
| 5277573 | Apparatus for fabricating precast concrete ramps | — | 1994-01-11 |