Ronald E. J. Monkhorst

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NL-2266 GD Leidschendam, NL

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Patents Grantslast 30 patents

Information Patent Grant
Device for tilting, carrying and transporting a grand piano
- Patent number 5,575,609
- Issue date Nov 19, 1996
- Monkhorst; Ronald Edward Jan
- Ronald E. J. Monkhorst
- G10 - MUSICAL INSTRUMENTS ACOUSTICS