Roland Frohlich

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Leiningen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Electronic keyboard musical instrument and a method of operating th...
- Patent number 4,644,840
- Issue date Feb 24, 1987
- Reinhard; Franz
- Reinhard Franz
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Electronic musical instrument
- Patent number 4,572,048
- Issue date Feb 25, 1986
- Franz; Reinhard
- Reinhard Franz
- G10 - MUSICAL INSTRUMENTS ACOUSTICS