Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4392070 | Insulated coil assembly and method of making same | — | 1983-07-05 |
| 4365407 | Method of making an insulated pole and coil assembly | William B. Penn, Roy L. Balke | 1982-12-28 |
| 4293784 | Insulated pole and coil assembly and method of making same | William B. Penn, Roy L. Balke | 1981-10-06 |