Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5274196 | Fiberglass cloth resin tape insulation | — | 1993-12-28 |
| 5105057 | Insulated magnet wire and method of forming the same | — | 1992-04-14 |
| 4868035 | Electrical insulating materials made partly or wholly of polyester film | Leon Helfand | 1989-09-19 |