Rolf Spuler

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8405 Winterthur, CH

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Patents Grantslast 30 patents

Information Patent Grant
Device for inserting strings
- Patent number 5,277,094
- Issue date Jan 11, 1994
- Hoshino Gakki Co., Ltd.
- Rolf Spuler
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Piezoelectric bridge sound pick-up for string instruments
- Patent number 5,109,747
- Issue date May 5, 1992
- Rolf Spuler
- G10 - MUSICAL INSTRUMENTS ACOUSTICS