Ernest J. Ferron

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76000 Rouen, FR

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Patents Grantslast 30 patents

Information Patent Grant
Trumpet with improved tone
- Patent number 4,515,061
- Issue date May 7, 1985
- Establissement E. Ferron
- Ernest Ferron
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Wind instrument with adjustable tone
- Patent number 4,515,060
- Issue date May 7, 1985
- Ernest Ferron
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Obturator for flute designed to improve the emission of certain notes
- Patent number 4,499,810
- Issue date Feb 19, 1985
- Ernest J. Ferron
- G10 - MUSICAL INSTRUMENTS ACOUSTICS