PR

Philippe RIDEL

U.S. Philips: 1 patents #4,133 of 8,851Top 50%
📍 Bois-Guillaume, FR: #30 of 71 inventorsTop 45%
Overall (All Time): #4,012,784 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4509022 Amplifier circuit with automatic gain control and hearing aid equipped with such a circuit — 1985-04-02