Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4780696 | Multifilar transformer apparatus and winding method | — | 1988-10-25 |
| 4679132 | Floating battery feed circuit using multifilar transformer | — | 1987-07-07 |
| 4402039 | Telephone line circuit | — | 1983-08-30 |
| 4340906 | Video signal coding by video signal polarity reversal on the basis of brightness level comparison | Pieter den Toonder, Johannes C. Seltenrijch, Graham S. Stubbs, Pieter J. Fondse | 1982-07-20 |