Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4993305 | Manual with piano effect for use in electronic organs | Walfried Dost | 1991-02-19 |
| 4860630 | Manual for electronic organs and the like | Walfried Dost | 1989-08-29 |
| 4644840 | Electronic keyboard musical instrument and a method of operating the same | Wilfried Dittmar, Christian Scheidegger, Roland Frohlich | 1987-02-24 |
| 4572048 | Electronic musical instrument | Wilfried Dittmar, Christian Scheidegger, Roland Frohlich | 1986-02-25 |
| 4513365 | Function selector | Wilfried Dittmar, Gunter Daubach | 1985-04-23 |
| 4401005 | Electronic keyboard-operated musical instrument | Wilfried Dittmar | 1983-08-30 |
| 4392405 | Method and apparatus for processing tone signals in electronic musical instruments | Wilfried Dittmar | 1983-07-12 |
| 4364296 | Electrical musical instrument | Wilfried Dittmar | 1982-12-21 |
| 4357850 | Tone generator system for electronic musical instruments | Wilfried Dittmar | 1982-11-09 |
| D265483 | Electronic organ | — | 1982-07-20 |
| 4338845 | System for expanding the dynamic volume range of electronic musical instruments | Wilfried Dittmar | 1982-07-13 |
| 4332182 | Apparatus for transposing passages in electronic musical instruments | Wilfried Dittmar | 1982-06-01 |
| 4250788 | Register arrangement for electronic musical instruments | Wilfried Dittmar | 1981-02-17 |