Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853665 | Noise suppressing isolation transformer | — | 1989-08-01 |
| 4810991 | Encapsulated integral fuse block transformer | Dennis D. Bonkrud, Richard De Lain, William W. Barnes, II | 1989-03-07 |