EF

Ernest Ferron

📍 Rouen, FR: #36 of 223 inventorsTop 20%
Overall (All Time): #1,679,242 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4515060 Wind instrument with adjustable tone — 1985-05-07
4515061 Trumpet with improved tone — 1985-05-07
4499810 Obturator for flute designed to improve the emission of certain notes — 1985-02-19