Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D379514 | Compact telescoping retinoscope | Deborah A. Laun, Ervin Goldfain | 1997-05-27 |
| 5459535 | Compact telescoping retinoscope | Ervin Goldfain | 1995-10-17 |
| 4435098 | Office machine escapement disengagement and automatic engagement mechanism | — | 1984-03-06 |