Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4638123 | Circuit arrangement for a small PABX with a switching matrix that has electronic crosspoints | Ewald Dotzauer, Wolfgang Mueller | 1987-01-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4638123 | Circuit arrangement for a small PABX with a switching matrix that has electronic crosspoints | Ewald Dotzauer, Wolfgang Mueller | 1987-01-20 |