Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4608461 | Subscriber circuit for a telephone network | Franciscus A. C. M. Schoofs | 1986-08-26 |
| 4535303 | Driver circuit | Franciscus A. C. M. Schoofs | 1985-08-13 |
| 4484151 | Amplifier circuit | Franciscus A. C. M. Schoofs, Job F. P. van Mil | 1984-11-20 |
| 4477696 | Conference system for telephony | Adrianus W. M. van den Enden, Job F. P. van Mil | 1984-10-16 |
| 4459632 | Voltage-limiting circuit | Franciscus A. C. M. Schoofs | 1984-07-10 |
| 4415775 | Arrangement for exchanging signals between separated circuits | Franciscus A. C. M. Schoofs | 1983-11-15 |
| 4370526 | Arrangement for applying a ringing voltage to a subscriber's line | Franciscus A. C. M. Schoofs, Frederik Van Dongen | 1983-01-25 |
| 4313034 | Connecting circuit for a telephone line | Franciscus A. C. M. Schoofs | 1982-01-26 |
| 4306122 | Telephone line circuit | Franciscus A. C. M. Schoofs | 1981-12-15 |