Walfried Dost

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Koblenz, DE

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Patents Grantslast 30 patents

Information Patent Grant
Manual with piano effect for use in electronic organs
- Patent number 4,993,305
- Issue date Feb 19, 1991
- Wersi GmbH & Co.
- Reinhard Franz
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Manual for electronic organs and the like
- Patent number 4,860,630
- Issue date Aug 29, 1989
- Franz; Reinhard
- Reinhard Franz
- G10 - MUSICAL INSTRUMENTS ACOUSTICS