Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11215482 | Data logger, in particular for monitoring an environment parameter for storing medication | — | 2022-01-04 |
| 11099038 | Data logger and sampling and encoding methods for use in a data logger | — | 2021-08-24 |
| 9717652 | Add-on unit for a handheld container for storing objects | — | 2017-08-01 |
| 5101429 | Electronic telephone set | — | 1992-03-31 |
| 4585909 | Transmission circuit for a DTMF-telephone set | Henricus J. M. Otten, Frederik Van Dongen | 1986-04-29 |
| 4518828 | Transmission circuit for an electronic telephone set | Daniel J. G. Janssen | 1985-05-21 |
| 4388498 | Voltage stabilizer suitable for use in a telephone set | Daniel J. G. Janssen | 1983-06-14 |
| 4341991 | Voltage stabilizer suitable for a telephone set | Daniel J. G. Janssen, Johannes Bloos | 1982-07-27 |